WeatherVerity
English
  1. WeatherVerity
  2. San Juan

Published by WeatherVerity

Weather in San Juan

San Juan Antiguo Barrio
18.4663 °, -66.1057 °

All dates and times below are local to San Juan (America/Puerto_Rico).

Compare locations

Current conditions

Model estimate
28°C

Mainly clear

Feels like
31 °C
Humidity
74 %
Wind speed
4.8 m/s
Wind from
E · 91 °
Precipitation (15 min)
0 mm
Valid at Retrieved Underlying forecast data: Open-Meteo

Today at a glance

Thunderstorms are forecast around 17:00 GMT-4.

Forecast hours ahead in San Juan, 05:00 GMT-4–23:00 GMT-4 local time: 27 °C – 29.8 °C · up to 92% precipitation risk · wind up to 6.9 m/s.

Best upcoming time outside: – · 89/100 →

Facts behind this summary

Calculated by WeatherVerity from the forecast data shown on this page. Underlying forecast data: Open-Meteo · Hourly retrieved: · America/Puerto_Rico

The first card shows the best upcoming or recommended two-hour period. The second shows the least favorable period. The full-day best, timeline and special weather windows are supporting details.

Best & worst time outside

General outdoor activity · 2 consecutive hours · America/Puerto_Rico

Today ·

Best upcoming time outside · Today

89/100 · Great

  • 26.7 °C – 27 °C
  • Light wind · Wind up to 2.1 m/s
  • Low precipitation risk · Up to 1% precipitation risk

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Least favorable time outside · Today

15/100 · Conditions to watch

  • Precipitation forecast · Up to 92% precipitation risk
  • 28.5 °C – 28.8 °C
  • Wind up to 6 m/s

Score and temperatures apply to this period.

Conditions to watch
  • –: Thunderstorm
Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Thunderstorm. Severe conditions are forecast. This score is not a recommendation to go outside.

Full-day details

Today covers the whole local day, including periods that have already passed.

00:00 is the end of the selected day.

Selected upcoming two-hour window for general outdoor activity in San Juan on 13 Sept 2026: 22:00 GMT-4–00:00 GMT-4 local time, WeatherVerity score 89/100. Least favorable time outside in San Juan on 13 Sept 2026: 15:00 GMT-4–17:00 GMT-4 local time. 15/100.

The local day at a glance America/Puerto_Rico

Selected period ·

Least favorable ·

Now · Calculated at 04:24 GMT-4 local time

Hourly scores; gaps mean missing data. Earlier hours are faded.

Looking for different weather?

Compare selected places for this local day.

Find sunnier places Find warmer places Find colder places Find drier places Wetter weather – higher precipitation risk Find places with less wind Find places with more wind Snow in the forecast

Tomorrow ·

Best time outside · Tomorrow

92/100 · Excellent

  • 25.6 °C – 25.8 °C
  • Low precipitation risk · Up to 4% precipitation risk
  • Light wind · Wind up to 1.7 m/s

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Least favorable time outside · Tomorrow

44/100 · Fair

  • Precipitation forecast · Up to 87% precipitation risk
  • 28.2 °C – 28.6 °C
  • Wind up to 5.8 m/s

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Full-day details

Selected two-hour window for general outdoor activity in San Juan on 14 Sept 2026: 04:00 GMT-4–06:00 GMT-4 local time, WeatherVerity score 92/100. Least favorable time outside in San Juan on 14 Sept 2026: 14:00 GMT-4–16:00 GMT-4 local time. 44/100.

The local day at a glance America/Puerto_Rico

Selected period ·

Least favorable ·

Calculated at 04:24 GMT-4 local time

Hourly scores; gaps mean missing data. Earlier hours are faded.

Looking for different weather?

Compare selected places for this local day.

Find sunnier places Find warmer places Find colder places Find drier places Wetter weather – higher precipitation risk Find places with less wind Find places with more wind Snow in the forecast

Day after tomorrow ·

Best time outside · Day after tomorrow

91/100 · Excellent

  • 25.9 °C – 26.1 °C
  • Low precipitation risk · Up to 6% precipitation risk
  • Light wind · Wind up to 1.7 m/s

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Least favorable time outside · Day after tomorrow

15/100 · Conditions to watch

  • Precipitation forecast · Up to 17% precipitation risk
  • 25.5 °C – 27.8 °C
  • Wind up to 3.9 m/s

Score and temperatures apply to this period.

Conditions to watch
  • –: Thunderstorm
Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Thunderstorm. Severe conditions are forecast. This score is not a recommendation to go outside.

Full-day details

00:00 is the end of the selected day.

Selected two-hour window for general outdoor activity in San Juan on 15 Sept 2026: 01:00 GMT-4–03:00 GMT-4 local time, WeatherVerity score 91/100. Least favorable time outside in San Juan on 15 Sept 2026: 22:00 GMT-4–00:00 GMT-4 local time. 15/100.

The local day at a glance America/Puerto_Rico

Selected period ·

Least favorable ·

Calculated at 04:24 GMT-4 local time

Hourly scores; gaps mean missing data. Earlier hours are faded.

Looking for different weather?

Compare selected places for this local day.

Find sunnier places Find warmer places Find colder places Find drier places Wetter weather – higher precipitation risk Find places with less wind Find places with more wind Snow in the forecast

Best and least favorable are relative to this day. Scores describe outdoor comfort, not official warnings.

Find a weather window
Today · 13 Sept 2026

Least wind over 2 hours

Best available period

–

Outdoor Score: 88/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 27–27.4 °C · Average wind: 2 m/s; maximum: 2.1 m/s · Precipitation risk: up to 0%

Lowest precipitation risk over 3 hours

Best available period

–

Outdoor Score: 89/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 26.7–27.4 °C · Average wind: 2 m/s; maximum: 2.1 m/s · Precipitation risk: up to 1%

Warmest 2-hour period

Best available period

–

Outdoor Score: 39/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range

Weather values and full answer

Temperature: 29.1–29.8 °C · Average wind: 6.2 m/s; maximum: 6.9 m/s · Precipitation risk: up to 88%

Coolest 2-hour period

Best available period

–

Outdoor Score: 89/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 26.7–27 °C · Average wind: 2.1 m/s; maximum: 2.1 m/s · Precipitation risk: up to 1%

Best available daylight window

Best available period

–

Outdoor Score: 74/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Temperatures outside the activity range

Weather values and full answer

Temperature: 28.3–29 °C · Average wind: 5 m/s; maximum: 5.5 m/s · Precipitation risk: up to 25%

3 hours with low precipitation risk

Best available period

–

Outdoor Score: 89/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 26.7–27.4 °C · Average wind: 2 m/s; maximum: 2.1 m/s · Precipitation risk: up to 1%

2 hours above 20 °C

Best available period

–

Outdoor Score: 89/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 26.7–27 °C · Average wind: 2.1 m/s; maximum: 2.1 m/s · Precipitation risk: up to 1%

2 hours of clear daylight

Best available period

–

Outdoor Score: 74/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Temperatures outside the activity range

Weather values and full answer

Temperature: 28.3–29 °C · Average wind: 5 m/s; maximum: 5.5 m/s · Precipitation risk: up to 25%

Tomorrow · 14 Sept 2026

Least wind over 2 hours

Best available period

–

Outdoor Score: 90/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 25.8–26.4 °C · Average wind: 1.5 m/s; maximum: 1.7 m/s · Precipitation risk: up to 6%

Lowest precipitation risk over 3 hours

Best available period

–

Outdoor Score: 90/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 25.7–27.8 °C · Average wind: 1.6 m/s; maximum: 2.1 m/s · Precipitation risk: up to 2%

Warmest 2-hour period

Best available period

–

Outdoor Score: 60/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range

Weather values and full answer

Temperature: 29–29.2 °C · Average wind: 5.2 m/s; maximum: 5.4 m/s · Precipitation risk: up to 65%

Coolest 2-hour period

Best available period

–

Outdoor Score: 92/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 25.6–25.8 °C · Average wind: 1.6 m/s; maximum: 1.7 m/s · Precipitation risk: up to 5%

Best available daylight window

Best available period

–

Outdoor Score: 75/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Temperatures outside the activity range

Weather values and full answer

Temperature: 27.8–29.2 °C · Average wind: 3.4 m/s; maximum: 4.7 m/s · Precipitation risk: up to 36%

3 hours with low precipitation risk

Best available period

–

Outdoor Score: 92/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 25.6–25.8 °C · Average wind: 1.6 m/s; maximum: 1.7 m/s · Precipitation risk: up to 5%

2 hours above 20 °C

Best available period

–

Outdoor Score: 92/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 25.6–25.8 °C · Average wind: 1.6 m/s; maximum: 1.7 m/s · Precipitation risk: up to 5%

2 hours of clear daylight

Best available period

–

Outdoor Score: 75/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Temperatures outside the activity range

Weather values and full answer

Temperature: 27.8–29.2 °C · Average wind: 3.4 m/s; maximum: 4.7 m/s · Precipitation risk: up to 36%

Day after tomorrow · 15 Sept 2026

Least wind over 2 hours

Best available period

–

Outdoor Score: 91/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 25.9–26.1 °C · Average wind: 1.3 m/s; maximum: 1.7 m/s · Precipitation risk: up to 6%

Lowest precipitation risk over 3 hours

Best available period

–

Outdoor Score: 91/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 25.9–26.5 °C · Average wind: 1.4 m/s; maximum: 1.7 m/s · Precipitation risk: up to 6%

Warmest 2-hour period

Best available period

–

Outdoor Score: 55/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.5–28.7 °C · Average wind: 5.5 m/s; maximum: 6.4 m/s · Precipitation risk: up to 78%

Coolest 2-hour period

Best available period

–

Outdoor Score: 91/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 25.9–26.1 °C · Average wind: 1.3 m/s; maximum: 1.7 m/s · Precipitation risk: up to 6%

Best available daylight window

Best available period

–

Outdoor Score: 46/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.2–28.7 °C · Average wind: 5.9 m/s; maximum: 6.4 m/s · Precipitation risk: up to 84%

3 hours with low precipitation risk

Best available period

–

Outdoor Score: 91/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 25.9–26.5 °C · Average wind: 1.4 m/s; maximum: 1.7 m/s · Precipitation risk: up to 6%

2 hours above 20 °C

Best available period

–

Outdoor Score: 91/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Low precipitation risk · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 25.9–26.5 °C · Average wind: 1.4 m/s; maximum: 1.7 m/s · Precipitation risk: up to 2%

2 hours of clear daylight

No 2-hour clear daylight period on 15 Sept 2026.

Best available daylight window

Best available period

–

Outdoor Score: 46/100

Score and temperatures apply to this period.

Limited data

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.2–28.7 °C · Average wind: 5.9 m/s; maximum: 6.4 m/s · Precipitation risk: up to 84%

How WeatherVerity calculates this

Calculated by WeatherVerity from the forecast data shown on this page.

Underlying forecast data: Open-Meteo · CC BY 4.0

Hourly retrieved: · Fresh until:

Past hours are model estimates, not observations or a record of earlier forecasts.

Cold wind lowers the comfort cap further. Temperature below 15 °C reduces General comfort. A two-hour window including such temperatures is capped at 79. Temperature, precipitation probability/weather code and wind are combined geometrically. A period overview combines 80% time-weighted mean with 20% of the weakest quarter; daylight counts double. Risk intervals remain visible. Raw scores determine rankings; 100 is unavailable with incomplete model inputs. This is a comfort indicator, not forecast accuracy or an official warning.

Limited assessment: gusts, rainfall amount, humidity and solar data are unavailable.

Weather scores are unchanged. Among windows within two points of the highest score and in the same quality band, starts from 06:00 to before 23:00 local time are preferred; 22:00–00:00 qualifies. Then score, daylight and the earliest start break ties. Daylight is optional, including in polar night or midnight sun. The absolute daily best is always retained. Least favorable stays at the actual minimum score; only tied minima use non-overlap and distance. Overlapping windows within a two-point range are grouped; small contrast means a spread of at most five points. A whole-day “no poor periods” statement requires complete coverage, all two-hour windows at least Good (60), and no hourly score in Poor/Very poor (below 40). These are presentation rules, not changes to meteorological scores.

Score labels

  • 90–100: Excellent
  • 75–89: Great
  • 60–74: Good
  • 40–59: Fair
  • 20–39: Poor
  • 0–19: Very poor
Sources & method

Through the day

Today · Sun 13 Sept · America/Puerto_Rico

Today's hourly temperature in San JuanModel forecast from 00:00 to 23:00, America/Puerto_Rico. Hourly temperatures range from 27 to 29.8 degrees Celsius. Exact values follow below. Gaps indicate missing values.25°29°32°Current hour00:00: 29.4 °C · Partly cloudy01:00: 29.1 °C · Partly cloudy02:00: 28.9 °C · Partly cloudy03:00: 28.8 °C · Partly cloudy04:00: 28.4 °C · Mainly clear05:00: 28.1 °C · Mainly clear06:00: 28.2 °C · Mainly clear07:00: 28.3 °C · Mainly clear08:00: 28.8 °C · Clear sky09:00: 29 °C · Clear sky10:00: 29.3 °C · Mainly clear11:00: 29.5 °C · Moderate drizzle12:00: 29.1 °C · Light drizzle13:00: 29.8 °C · Light drizzle14:00: 28.6 °C · Moderate drizzle15:00: 28.7 °C · Mainly clear16:00: 28.8 °C · Light drizzle17:00: 28.5 °C · Thunderstorm18:00: 28.6 °C · Overcast19:00: 28.3 °C · Overcast20:00: 27.8 °C · Overcast21:00: 27.4 °C · Overcast22:00: 27 °C · Clear sky23:00: 27 °C · Clear sky00:0006:0012:0017:0023:00
  1. 29 °CPartly cloudyPrecip. chance 8 %Wind 4.9 m/s
  2. 29 °CPartly cloudyPrecip. chance 12 %Wind 5 m/s
  3. 29 °CPartly cloudyPrecip. chance 14 %Wind 4.8 m/s
  4. 29 °CPartly cloudyPrecip. chance 12 %Wind 5 m/s
  5. 28 °CMainly clearPrecip. chance 7 %Wind 4.9 m/sCurrent hour
  6. 28 °CMainly clearPrecip. chance 4 %Wind 4.7 m/s
  7. 28 °CMainly clearPrecip. chance 0 %Wind 4.4 m/s
  8. 28 °CMainly clearPrecip. chance 0 %Wind 4.5 m/s
  9. 29 °CClear skyPrecip. chance 2 %Wind 5.1 m/s
  10. 29 °CClear skyPrecip. chance 25 %Wind 5.5 m/s
  11. 29 °CMainly clearPrecip. chance 56 %Wind 5.4 m/s
  12. 30 °CModerate drizzlePrecip. chance 80 %Wind 5.8 m/s
  13. 29 °CLight drizzlePrecip. chance 88 %Wind 6.2 m/s
  14. 30 °CLight drizzlePrecip. chance 87 %Wind 6.9 m/s
  15. 29 °CModerate drizzlePrecip. chance 86 %Wind 6 m/s
  16. 29 °CMainly clearPrecip. chance 89 %Wind 6 m/s
  17. 29 °CLight drizzlePrecip. chance 92 %Wind 5.9 m/s
  18. 29 °CThunderstormPrecip. chance 86 %Wind 5.3 m/s
  19. 29 °COvercastPrecip. chance 65 %Wind 4.3 m/s
  20. 28 °COvercastPrecip. chance 35 %Wind 4 m/s
  21. 28 °COvercastPrecip. chance 12 %Wind 2.6 m/s
  22. 27 °COvercastPrecip. chance 3 %Wind 2 m/s
  23. 27 °CClear skyPrecip. chance 0 %Wind 2 m/s
  24. 27 °CClear skyPrecip. chance 0 %Wind 2.1 m/s

Hourly model forecast, including earlier hours; not measured observations. Source: Open-Meteo. Retrieved . Sources & method.

The next 7 days

Local dates · America/Puerto_Rico

Daily forecast for San Juan, San Juan Antiguo Barrio. Source: Open-Meteo. Retrieved .
DayConditionsHigh / LowPrecip. chance*PrecipitationMax wind
Thunderstorm
30 °C / 27 °C92 %1.8 mm6.9 m/s
Light drizzle
29 °C / 26 °C87 %0.5 mm6.2 m/s
Light drizzle
29 °C / 26 °C84 %1.7 mm6.4 m/s
Thunderstorm
30 °C / 25 °C55 %10 mm6.4 m/s
Thunderstorm
30 °C / 26 °C92 %4.8 mm4 m/s
Overcast
30 °C / 26 °C53 %0 mm6.8 m/s
Overcast
29 °C / 25 °C80 %0 mm5.5 m/s

*Maximum precipitation probability for the day, including rain or snow. How to read these values.

WeatherVerity answer

Weather in San Juan today

Today

WeatherVerity forecast for San Juan: high 30 °C, low 27 °C. Thunderstorm.

Maximum precipitation probability: 92 %. Precipitation: 1.8 mm.

Underlying forecast data: Open-Meteo · Retrieved

Tomorrow

WeatherVerity forecast for San Juan: high 29 °C, low 26 °C. Light drizzle.

Maximum precipitation probability: 87 %. Precipitation: 0.5 mm.

Underlying forecast data: Open-Meteo · Retrieved

Model forecasts, not measured observations. · America/Puerto_Rico

Verity Trust

Traceable forecast details, without claiming observed accuracy.

Forecast by
Open-Meteo
Published by
WeatherVerity
Last retrieved
Valid for
2026-09-13T04:00:00.000Z – 2026-09-16T04:00:00.000Z
Local time zone
America/Puerto_Rico
Data status
current: Fresh · hourly: Fresh · forecast: Fresh
Method
forecast-receipt-method-v2 · Full method
Forecast agreement
Not available
Forecast stability
Collecting data
Verified accuracy
Collecting data
What changed?

Collecting data

Only the same provider, product, place, unit, interval and exact valid time are compared.

Behind this forecast

Weather sources
Open-Meteo
Location source
GeoNames 4568127 via Open-Meteo
Local time zone
America/Puerto_Rico
Current retrieved
Forecast retrieved
Hourly retrieved
Page data last updated
Model run issued
Not supplied by this API

Current conditions are model estimates. Retrieval time tells you when we fetched the data, not when the weather model was run. Sources, units and method.