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Weather in San José

Provincia de San José · Costa Rica
9.9339 °, -84.0849 °

All dates and times below are local to San José (America/Costa_Rica).

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WeatherVerity answer

Weather in San José today

Today

WeatherVerity forecast for San José: high 28 °C, low 20 °C. Light drizzle.

Maximum precipitation probability: 98 %. Precipitation: 0.7 mm.

Underlying forecast data: Open-Meteo · Retrieved

Tomorrow

WeatherVerity forecast for San José: high 26 °C, low 19 °C. Dense drizzle.

Maximum precipitation probability: 100 %. Precipitation: 3.2 mm.

Underlying forecast data: Open-Meteo · Retrieved

Model forecasts, not measured observations. · America/Costa_Rica

Today at a glance

Precipitation risk rises from 29% to 60% for 10:00 GMT-6–11:00 GMT-6. Precipitation risk falls from 78% to 22% for 19:00 GMT-6–20:00 GMT-6.

Facts behind this summary

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

Current conditions

Model estimate
20°C

Overcast

Feels like
20 °C
Humidity
69 %
Wind speed
2.9 m/s
Wind from
E · 82 °
Precipitation (15 min)
0 mm
Valid at Retrieved Underlying forecast data: Open-Meteo

Best & worst time outside

General outdoor activity · 2 consecutive hours · America/Costa_Rica

Today ·

Best upcoming time outside · Today

99/100 · Excellent

  • Light wind · Wind up to 2.6 m/s
  • Low precipitation risk · Up to 0% precipitation risk
  • Temperatures within the activity range · 20.9 °C – 21.9 °C

Least favorable time outside · Today

57/100 · Fair

  • Up to 98% precipitation risk
  • 27.2 °C – 28.4 °C
  • Light wind · Wind up to 2.1 m/s

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

Selected upcoming two-hour window for general outdoor activity in San José on 2026-09-08: 20:00 GMT-6–22:00 GMT-6 local time, WeatherVerity score 99/100. Least favorable time outside in San José on 2026-09-08: 12:00 GMT-6–14:00 GMT-6 local time. 57/100.

The local day at a glance America/Costa_Rica

Selected period ·

Least favorable ·

Now · Calculated at 05:05 GMT-6 local time

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

Looking for better weather?

Compare selected places for this local day.

Find sunnier places Find warmer places Find drier places

Tomorrow ·

Best time outside · Tomorrow

95/100 · Excellent

  • Wind up to 3 m/s
  • Low precipitation risk · Up to 7% precipitation risk
  • Temperatures within the activity range · 19.7 °C – 19.9 °C

Least favorable time outside · Tomorrow

57/100 · Fair

  • Precipitation forecast · Up to 100% precipitation risk
  • Wind up to 3 m/s
  • 24.5 °C – 25.8 °C

Selected two-hour window for general outdoor activity in San José on 2026-09-09: 00:00 GMT-6–02:00 GMT-6 local time, WeatherVerity score 95/100. Least favorable time outside in San José on 2026-09-09: 11:00 GMT-6–13:00 GMT-6 local time. 57/100.

The local day at a glance America/Costa_Rica

Selected period ·

Least favorable ·

Calculated at 05:05 GMT-6 local time

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

Looking for better weather?

Compare selected places for this local day.

Find sunnier places Find warmer places Find drier places

Day after tomorrow ·

Best time outside · Day after tomorrow

94/100 · Excellent

  • Low precipitation risk · Up to 12% precipitation risk
  • Light wind · Wind up to 2.7 m/s
  • Temperatures within the activity range · 19.9 °C – 20.1 °C

Least favorable time outside · Day after tomorrow

60/100 · GoodStill good outdoors

  • Precipitation forecast · Up to 100% precipitation risk
  • Light wind · Wind up to 2.3 m/s
  • Temperatures within the activity range · 21.5 °C – 23.2 °C

No truly poor periods in this day’s complete forecast.

00:00 is the end of the selected day.

Selected two-hour window for general outdoor activity in San José on 2026-09-10: 22:00 GMT-6–00:00 GMT-6 local time, WeatherVerity score 94/100. Least favorable time outside in San José on 2026-09-10: 11:00 GMT-6–13:00 GMT-6 local time. 60/100.

The local day at a glance America/Costa_Rica

Selected period ·

Least favorable ·

Calculated at 05:05 GMT-6 local time

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

Looking for better weather?

Compare selected places for this local day.

Find sunnier places Find warmer places Find drier places

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

Find a weather window
Today · 2026-09-08

Least wind over 2 hours

Best available period

–

Outdoor Score: 62/100

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 24.6–26.4 °C · Average wind: 1.5 m/s; maximum: 1.9 m/s · Precipitation risk: up to 96%

Lowest precipitation risk over 3 hours

Best available period

–

Outdoor Score: 96/100

Already passed

Low precipitation risk · Temperatures within the activity range

Weather values and full answer

Temperature: 20.3–21.3 °C · Average wind: 3.3 m/s; maximum: 3.4 m/s · Precipitation risk: up to 0%

Warmest 2-hour period

Best available period

–

Outdoor Score: 59/100

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range · Light wind

Weather values and full answer

Temperature: 27.7–28.4 °C · Average wind: 2.1 m/s; maximum: 2.4 m/s · Precipitation risk: up to 95%

Coolest 2-hour period

Best available period

–

Outdoor Score: 97/100

In progress

Low precipitation risk · Temperatures within the activity range

Weather values and full answer

Temperature: 20–20.3 °C · Average wind: 3 m/s; maximum: 3.1 m/s · Precipitation risk: up to 0%

Best available daylight window

Best available period

–

Outdoor Score: 97/100

Upcoming

Low precipitation risk · Temperatures within the activity range

Weather values and full answer

Temperature: 20.3–23.1 °C · Average wind: 3.1 m/s; maximum: 3.3 m/s · Precipitation risk: up to 0%

3 hours with low precipitation risk

Best available period

–

Outdoor Score: 98/100

Upcoming

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

Weather values and full answer

Temperature: 20.6–21.9 °C · Average wind: 2.5 m/s; maximum: 2.7 m/s · Precipitation risk: up to 0%

2 hours above 20 °C

Best available period

–

Outdoor Score: 99/100

Upcoming

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

Weather values and full answer

Temperature: 20.9–21.9 °C · Average wind: 2.4 m/s; maximum: 2.6 m/s · Precipitation risk: up to 0%

2 hours of clear daylight

No 2-hour clear daylight period on 2026-09-08.

Best available daylight window

Best available period

–

Outdoor Score: 97/100

Upcoming

Low precipitation risk · Temperatures within the activity range

Weather values and full answer

Temperature: 20.3–23.1 °C · Average wind: 3.1 m/s; maximum: 3.3 m/s · Precipitation risk: up to 0%

Tomorrow · 2026-09-09

Least wind over 2 hours

Best available period

–

Outdoor Score: 60/100

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures within the activity range · Light wind

Weather values and full answer

Temperature: 22.3–23.2 °C · Average wind: 2.1 m/s; maximum: 2.2 m/s · Precipitation risk: up to 100%

Lowest precipitation risk over 3 hours

Best available period

–

Outdoor Score: 94/100

Upcoming

Low precipitation risk · Temperatures within the activity range

Weather values and full answer

Temperature: 19.5–19.9 °C · Average wind: 2.8 m/s; maximum: 3 m/s · Precipitation risk: up to 10%

Warmest 2-hour period

Best available period

–

Outdoor Score: 58/100

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range

Weather values and full answer

Temperature: 24.6–25.8 °C · Average wind: 3.2 m/s; maximum: 3.6 m/s · Precipitation risk: up to 96%

Coolest 2-hour period

Best available period

–

Outdoor Score: 94/100

Upcoming

Low precipitation risk · Temperatures within the activity range

Weather values and full answer

Temperature: 19.4–19.7 °C · Average wind: 3 m/s; maximum: 3.1 m/s · Precipitation risk: up to 9%

Best available daylight window

Best available period

–

Outdoor Score: 79/100

Upcoming

Precipitation may affect this activity · Temperatures within the activity range

Weather values and full answer

Temperature: 20.1–23.6 °C · Average wind: 2.8 m/s; maximum: 3.4 m/s · Precipitation risk: up to 42%

3 hours with low precipitation risk

Best available period

–

Outdoor Score: 94/100

Upcoming

Low precipitation risk · Temperatures within the activity range

Weather values and full answer

Temperature: 19.5–19.9 °C · Average wind: 2.8 m/s; maximum: 3 m/s · Precipitation risk: up to 10%

2 hours above 20 °C

Best available period

–

Outdoor Score: 87/100

Upcoming

Temperatures within the activity range · Light wind

Weather values and full answer

Temperature: 20.4–20.7 °C · Average wind: 2.6 m/s; maximum: 3 m/s · Precipitation risk: up to 29%

2 hours of clear daylight

No 2-hour clear daylight period on 2026-09-09.

Best available daylight window

Best available period

–

Outdoor Score: 79/100

Upcoming

Precipitation may affect this activity · Temperatures within the activity range

Weather values and full answer

Temperature: 20.1–23.6 °C · Average wind: 2.8 m/s; maximum: 3.4 m/s · Precipitation risk: up to 42%

Day after tomorrow · 2026-09-10

Least wind over 2 hours

Best available period

–

Outdoor Score: 80/100

Upcoming

Precipitation may affect this activity · Temperatures within the activity range · Light wind

Weather values and full answer

Temperature: 20.6–21.8 °C · Average wind: 1.3 m/s; maximum: 1.6 m/s · Precipitation risk: up to 60%

Lowest precipitation risk over 3 hours

Best available period

–

Outdoor Score: 93/100

Upcoming

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

Weather values and full answer

Temperature: 19.9–20.3 °C · Average wind: 2.5 m/s; maximum: 2.7 m/s · Precipitation risk: up to 14%

Warmest 2-hour period

Best available period

–

Outdoor Score: 61/100

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures within the activity range · Light wind

Weather values and full answer

Temperature: 23.2–24.2 °C · Average wind: 1.7 m/s; maximum: 2.1 m/s · Precipitation risk: up to 100%

Coolest 2-hour period

Best available period

–

Outdoor Score: 78/100

Upcoming

Temperatures within the activity range · Light wind

Weather values and full answer

Temperature: 19.6–20.1 °C · Average wind: 2.7 m/s; maximum: 2.9 m/s · Precipitation risk: up to 51%

Best available daylight window

Best available period

–

Outdoor Score: 71/100

Upcoming

Precipitation may affect this activity · Temperatures within the activity range

Weather values and full answer

Temperature: 19.6–23.3 °C · Average wind: 2.9 m/s; maximum: 3.3 m/s · Precipitation risk: up to 65%

3 hours with low precipitation risk

Best available period

–

Outdoor Score: 93/100

Upcoming

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

Weather values and full answer

Temperature: 19.9–20.3 °C · Average wind: 2.5 m/s; maximum: 2.7 m/s · Precipitation risk: up to 14%

2 hours above 20 °C

Best available period

–

Outdoor Score: 92/100

Upcoming

Temperatures within the activity range · Light wind

Weather values and full answer

Temperature: 20.1–20.6 °C · Average wind: 2 m/s; maximum: 2.5 m/s · Precipitation risk: up to 22%

2 hours of clear daylight

No 2-hour clear daylight period on 2026-09-10.

Best available daylight window

Best available period

–

Outdoor Score: 71/100

Upcoming

Precipitation may affect this activity · Temperatures within the activity range

Weather values and full answer

Temperature: 19.6–23.3 °C · Average wind: 2.9 m/s; maximum: 3.3 m/s · Precipitation risk: up to 65%

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.

Calculated by WeatherVerity from this forecast.

These are comfort scores, not confidence, accuracy or official warnings. Complete windows across each local day are considered; missing hours are not filled in.

Temperature and wind use both hourly endpoints. Precipitation probability applies to the hour ending at its timestamp. Window values are conservative maxima and temperature ranges, not continuous measurements.

Hourly precipitation amount, feels-like temperature, gusts and UV are not available in this forecast. Low precipitation risk does not guarantee a dry period. Clear weather codes in daylight do not measure sunshine duration.

Each hourly score combines precipitation, temperature and wind. Rain score = 100 − probability, capped at 30 when precipitation codes occur. Wind score loses 10 points per m/s above 2. Temperature loses 5 points per degree outside the activity range. Components stop at 0 and 100.

  • General outdoor activity: 10–25 °C; Weights: precipitation / temperature / wind 40% / 30% / 30%

Hourly scores are averaged across the window. Thunderstorms, freezing or heavy precipitation, wind ≥15 m/s, or temperature ≥35 °C or ≤−15 °C set the whole window score to zero. These are product rules, not official warning thresholds. Favorable requires at least 70 overall and at least 50 each hour. Ties compare rain, wind and temperature components, then earliest start. Best and worst use highest and lowest scores.

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 · Tue 8 Sept · America/Costa_Rica

Today's hourly temperature in San JoséModel forecast from 00:00 to 23:00, America/Costa_Rica. Hourly temperatures range from 20 to 28.4 degrees Celsius. Exact values follow below. Gaps indicate missing values.18°25°31°Current hour00:00: 21.3 °C · Overcast01:00: 21.1 °C · Overcast02:00: 20.5 °C · Overcast03:00: 20.3 °C · Overcast04:00: 20.1 °C · Overcast05:00: 20 °C · Overcast06:00: 20.3 °C · Partly cloudy07:00: 21.8 °C · Partly cloudy08:00: 23.1 °C · Overcast09:00: 25.6 °C · Overcast10:00: 27 °C · Overcast11:00: 27.7 °C · Overcast12:00: 28.4 °C · Overcast13:00: 28.4 °C · Partly cloudy14:00: 27.2 °C · Overcast15:00: 26.4 °C · Light drizzle16:00: 25.7 °C · Light drizzle17:00: 24.6 °C · Overcast18:00: 23.3 °C · Overcast19:00: 22.4 °C · Mainly clear20:00: 21.9 °C · Partly cloudy21:00: 21.2 °C · Mainly clear22:00: 20.9 °C · Mainly clear23:00: 20.6 °C · Mainly clear00:0006:0012:0017:0023:00
  1. 21 °COvercastPrecip. chance 0 %Wind 3.3 m/s
  2. 21 °COvercastPrecip. chance 0 %Wind 3.3 m/s
  3. 21 °COvercastPrecip. chance 0 %Wind 3.4 m/s
  4. 20 °COvercastPrecip. chance 0 %Wind 3.4 m/s
  5. 20 °COvercastPrecip. chance 0 %Wind 3.1 m/s
  6. 20 °COvercastPrecip. chance 0 %Wind 2.9 m/sCurrent hour
  7. 20 °CPartly cloudyPrecip. chance 0 %Wind 2.9 m/s
  8. 22 °CPartly cloudyPrecip. chance 0 %Wind 3.1 m/s
  9. 23 °COvercastPrecip. chance 0 %Wind 3.3 m/s
  10. 26 °COvercastPrecip. chance 6 %Wind 2.9 m/s
  11. 27 °COvercastPrecip. chance 29 %Wind 2.1 m/s
  12. 28 °COvercastPrecip. chance 60 %Wind 2.4 m/s
  13. 28 °COvercastPrecip. chance 84 %Wind 2.1 m/s
  14. 28 °CPartly cloudyPrecip. chance 95 %Wind 1.8 m/s
  15. 27 °COvercastPrecip. chance 98 %Wind 2.1 m/s
  16. 26 °CLight drizzlePrecip. chance 98 %Wind 1.9 m/s
  17. 26 °CLight drizzlePrecip. chance 96 %Wind 1.5 m/s
  18. 25 °COvercastPrecip. chance 90 %Wind 1.1 m/s
  19. 23 °COvercastPrecip. chance 78 %Wind 2.3 m/s
  20. 22 °CMainly clearPrecip. chance 53 %Wind 2.1 m/s
  21. 22 °CPartly cloudyPrecip. chance 22 %Wind 2.3 m/s
  22. 21 °CMainly clearPrecip. chance 0 %Wind 2.4 m/s
  23. 21 °CMainly clearPrecip. chance 0 %Wind 2.6 m/s
  24. 21 °CMainly clearPrecip. chance 0 %Wind 2.7 m/s

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

The next 7 days

Local dates · America/Costa_Rica

Daily forecast for San José, Provincia de San José, Costa Rica. Source: Open-Meteo. Retrieved .
DayConditionsHigh / LowPrecip. chance*PrecipitationMax wind
Light drizzle
28 °C / 20 °C98 %0.7 mm3.4 m/s
Dense drizzle
26 °C / 19 °C100 %3.2 mm3.6 m/s
Light rain showers
24 °C / 20 °C100 %4.4 mm3.4 m/s
Light drizzle
27 °C / 19 °C97 %1.6 mm3 m/s
Moderate drizzle
27 °C / 18 °C100 %4.2 mm3.1 m/s
Dense drizzle
26 °C / 19 °C100 %9 mm2.5 m/s
Light rain showers
23 °C / 20 °C100 %15 mm1.9 m/s

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

Behind this forecast

Weather sources
Open-Meteo
Location source
GeoNames 3621849 via Open-Meteo
Local time zone
America/Costa_Rica
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.