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Weather in Gustavia


17.8962 °, -62.8498 °

All dates and times below are local to Gustavia (America/St_Barthelemy).

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Current conditions

Model estimate
29°C

Partly cloudy

Feels like
31 °C
Humidity
74 %
Wind speed
7.8 m/s
Wind from
ENE · 77 °
Precipitation (15 min)
0 mm
Valid at Retrieved Underlying forecast data: Open-Meteo

Today at a glance

Forecast hours ahead in Gustavia, 04:00 GMT-4–23:00 GMT-4 local time: 28.7 °C – 29.1 °C · up to 18% precipitation risk · wind up to 8.6 m/s.

Best upcoming time outside: – · 79/100 →

Facts behind this summary

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

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/St_Barthelemy

Today ·

Best upcoming time outside · Today

79/100 · Great

  • Wind up to 7.2 m/s
  • 28.9 °C – 29 °C
  • Low precipitation risk · Up to 1% precipitation risk

Least favorable time outside · Today

68/100 · GoodStill good outdoors

  • Wind up to 8.6 m/s
  • Low precipitation risk · Up to 17% precipitation risk
  • 28.9 °C

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

Full-day details

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

Selected upcoming two-hour window for general outdoor activity in Gustavia on 12 Sept 2026: 12:00 GMT-4–14:00 GMT-4 local time, WeatherVerity score 79/100. Least favorable time outside in Gustavia on 12 Sept 2026: 20:00 GMT-4–22:00 GMT-4 local time. 68/100.

The local day at a glance America/St_Barthelemy

Selected period ·

Least favorable ·

Now · Calculated at 03:57 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

74/100 · Good

  • Wind up to 6.8 m/s
  • Low precipitation risk · Up to 18% precipitation risk
  • 28.6 °C – 29 °C

Least favorable time outside · Tomorrow

48/100 · Fair

  • Precipitation forecast · Up to 19% precipitation risk
  • Wind up to 8.2 m/s
  • 28.3 °C – 28.6 °C
Full-day details

Selected two-hour window for general outdoor activity in Gustavia on 13 Sept 2026: 10:00 GMT-4–12:00 GMT-4 local time, WeatherVerity score 74/100. Least favorable time outside in Gustavia on 13 Sept 2026: 06:00 GMT-4–08:00 GMT-4 local time. 48/100.

The local day at a glance America/St_Barthelemy

Selected period ·

Least favorable ·

Calculated at 03:57 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

76/100 · Great

  • Wind up to 6.2 m/s
  • Up to 21% precipitation risk
  • 28.3 °C – 28.5 °C

Least favorable time outside · Day after tomorrow

53/100 · Fair

  • Precipitation forecast · Up to 22% precipitation risk
  • Wind up to 6.6 m/s
  • 28.4 °C – 29.1 °C
Full-day details

Selected two-hour window for general outdoor activity in Gustavia on 14 Sept 2026: 05:00 GMT-4–07:00 GMT-4 local time, WeatherVerity score 76/100. Least favorable time outside in Gustavia on 14 Sept 2026: 01:00 GMT-4–03:00 GMT-4 local time. 53/100.

The local day at a glance America/St_Barthelemy

Selected period ·

Least favorable ·

Calculated at 03:57 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 · 12 Sept 2026

Least wind over 2 hours

Best available period

–

Outdoor Score: 79/100

Upcoming

Low precipitation risk · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.9–29 °C · Average wind: 7.1 m/s; maximum: 7.2 m/s · Precipitation risk: up to 1%

Lowest precipitation risk over 3 hours

Best available period

–

Outdoor Score: 78/100

Upcoming

Low precipitation risk · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.9–29 °C · Average wind: 7.1 m/s; maximum: 7.5 m/s · Precipitation risk: up to 1%

Warmest 2-hour period

Best available period

–

Outdoor Score: 74/100

Already passed

Low precipitation risk · Temperatures outside the activity range

Weather values and full answer

Temperature: 29.1–29.5 °C · Average wind: 7.6 m/s; maximum: 7.7 m/s · Precipitation risk: up to 6%

Coolest 2-hour period

Best available period

–

Outdoor Score: 70/100

Upcoming

Low precipitation risk · Temperatures outside the activity range · Wind reduces comfort

Weather values and full answer

Temperature: 28.7–28.9 °C · Average wind: 8.3 m/s; maximum: 8.4 m/s · Precipitation risk: up to 15%

Best available daylight window

Best available period

–

Outdoor Score: 72/100

Upcoming

Low precipitation risk · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.9–29 °C · Average wind: 7.5 m/s; maximum: 7.8 m/s · Precipitation risk: up to 16%

3 hours with low precipitation risk

Best available period

–

Outdoor Score: 78/100

Upcoming

Low precipitation risk · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.9–29.1 °C · Average wind: 7.1 m/s; maximum: 7.2 m/s · Precipitation risk: up to 5%

2 hours above 20 °C

Best available period

–

Outdoor Score: 79/100

Upcoming

Low precipitation risk · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.9–29 °C · Average wind: 7.1 m/s; maximum: 7.2 m/s · Precipitation risk: up to 1%

2 hours of clear daylight

Best available period

–

Outdoor Score: 76/100

Upcoming

Low precipitation risk · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.9–29.1 °C · Average wind: 7.2 m/s; maximum: 7.3 m/s · Precipitation risk: up to 8%

Tomorrow · 13 Sept 2026

Least wind over 2 hours

Best available period

–

Outdoor Score: 71/100

Upcoming

Temperatures outside the activity range

Weather values and full answer

Temperature: 29.1–29.1 °C · Average wind: 6.2 m/s; maximum: 6.2 m/s · Precipitation risk: up to 27%

Lowest precipitation risk over 3 hours

Best available period

–

Outdoor Score: 72/100

Upcoming

Low precipitation risk · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.9–29.1 °C · Average wind: 7.3 m/s; maximum: 7.5 m/s · Precipitation risk: up to 16%

Warmest 2-hour period

Best available period

–

Outdoor Score: 62/100

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range

Weather values and full answer

Temperature: 29.1–29.1 °C · Average wind: 6.2 m/s; maximum: 6.4 m/s · Precipitation risk: up to 26%

Coolest 2-hour period

Best available period

–

Outdoor Score: 60/100

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range · Wind reduces comfort

Weather values and full answer

Temperature: 28.3–28.6 °C · Average wind: 7.6 m/s; maximum: 8.2 m/s · Precipitation risk: up to 18%

Best available daylight window

Best available period

–

Outdoor Score: 71/100

Upcoming

Temperatures outside the activity range

Weather values and full answer

Temperature: 29.1–29.1 °C · Average wind: 6.2 m/s; maximum: 6.2 m/s · Precipitation risk: up to 27%

3 hours with low precipitation risk

Best available period

–

Outdoor Score: 73/100

Upcoming

Low precipitation risk · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.4–29 °C · Average wind: 6.7 m/s; maximum: 7.3 m/s · Precipitation risk: up to 18%

2 hours above 20 °C

Best available period

–

Outdoor Score: 74/100

Upcoming

Low precipitation risk · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.6–29 °C · Average wind: 6.6 m/s; maximum: 6.8 m/s · Precipitation risk: up to 18%

2 hours of clear daylight

Best available period

–

Outdoor Score: 74/100

Upcoming

Low precipitation risk · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.6–29 °C · Average wind: 6.6 m/s; maximum: 6.8 m/s · Precipitation risk: up to 18%

Day after tomorrow · 14 Sept 2026

Least wind over 2 hours

Best available period

–

Outdoor Score: 76/100

Upcoming

Temperatures outside the activity range

Weather values and full answer

Temperature: 28.3–28.5 °C · Average wind: 5.8 m/s; maximum: 6.2 m/s · Precipitation risk: up to 21%

Lowest precipitation risk over 3 hours

Best available period

–

Outdoor Score: 61/100

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.2–28.5 °C · Average wind: 6 m/s; maximum: 6.8 m/s · Precipitation risk: up to 16%

Warmest 2-hour period

Best available period

–

Outdoor Score: 62/100

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.5–29.1 °C · Average wind: 6.6 m/s; maximum: 6.8 m/s · Precipitation risk: up to 22%

Coolest 2-hour period

Best available period

–

Outdoor Score: 53/100

Upcoming

Poor conditions — best available period.

Precipitation may affect this activity · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.2–28.4 °C · Average wind: 6.2 m/s; maximum: 6.8 m/s · Precipitation risk: up to 16%

Best available daylight window

Best available period

–

Outdoor Score: 70/100

Upcoming

Temperatures outside the activity range

Weather values and full answer

Temperature: 28.4–28.6 °C · Average wind: 6.7 m/s; maximum: 7 m/s · Precipitation risk: up to 26%

3 hours with low precipitation risk

Best available period

–

Outdoor Score: 71/100

Upcoming

Low precipitation risk · Temperatures outside the activity range

Weather values and full answer

Temperature: 28.5–28.7 °C · Average wind: 7.4 m/s; maximum: 7.6 m/s · Precipitation risk: up to 20%

2 hours above 20 °C

Best available period

–

Outdoor Score: 76/100

Upcoming

Temperatures outside the activity range

Weather values and full answer

Temperature: 28.3–28.5 °C · Average wind: 5.8 m/s; maximum: 6.2 m/s · Precipitation risk: up to 21%

2 hours of clear daylight

Best available period

–

Outdoor Score: 73/100

Upcoming

Temperatures outside the activity range

Weather values and full answer

Temperature: 28.4–28.6 °C · Average wind: 6.2 m/s; maximum: 6.7 m/s · Precipitation risk: up to 24%

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 · Sat 12 Sept · America/St_Barthelemy

Today's hourly temperature in GustaviaModel forecast from 00:00 to 23:00, America/St_Barthelemy. Hourly temperatures range from 28.7 to 29.5 degrees Celsius. Exact values follow below. Gaps indicate missing values.26°29°32°Current hour00:00: 29.5 °C · Clear sky01:00: 29.2 °C · Clear sky02:00: 29.1 °C · Mainly clear03:00: 29 °C · Mainly clear04:00: 29 °C · Partly cloudy05:00: 28.9 °C · Clear sky06:00: 28.7 °C · Mainly clear07:00: 28.7 °C · Mainly clear08:00: 28.9 °C · Mainly clear09:00: 29 °C · Clear sky10:00: 29 °C · Clear sky11:00: 29.1 °C · Mainly clear12:00: 28.9 °C · Mainly clear13:00: 28.9 °C · Partly cloudy14:00: 29 °C · Overcast15:00: 29 °C · Overcast16:00: 29.1 °C · Overcast17:00: 29.1 °C · Overcast18:00: 29 °C · Partly cloudy19:00: 29 °C · Mainly clear20:00: 28.9 °C · Partly cloudy21:00: 28.9 °C · Overcast22:00: 28.9 °C · Partly cloudy23:00: 28.9 °C · Clear sky00:0006:0012:0017:0023:00
  1. 30 °CClear skyPrecip. chance 3 %Wind 7.7 m/s
  2. 29 °CClear skyPrecip. chance 5 %Wind 7.7 m/s
  3. 29 °CMainly clearPrecip. chance 6 %Wind 7.4 m/s
  4. 29 °CMainly clearPrecip. chance 6 %Wind 7.5 m/sCurrent hour
  5. 29 °CPartly cloudyPrecip. chance 5 %Wind 7.9 m/s
  6. 29 °CClear skyPrecip. chance 6 %Wind 8.2 m/s
  7. 29 °CMainly clearPrecip. chance 10 %Wind 8.4 m/s
  8. 29 °CMainly clearPrecip. chance 15 %Wind 8.2 m/s
  9. 29 °CMainly clearPrecip. chance 18 %Wind 7.8 m/s
  10. 29 °CClear skyPrecip. chance 16 %Wind 7.5 m/s
  11. 29 °CClear skyPrecip. chance 12 %Wind 7.3 m/s
  12. 29 °CMainly clearPrecip. chance 8 %Wind 7.1 m/s
  13. 29 °CMainly clearPrecip. chance 5 %Wind 7.2 m/s
  14. 29 °CPartly cloudyPrecip. chance 1 %Wind 7 m/s
  15. 29 °COvercastPrecip. chance 0 %Wind 7.1 m/s
  16. 29 °COvercastPrecip. chance 1 %Wind 7.5 m/s
  17. 29 °COvercastPrecip. chance 5 %Wind 7.6 m/s
  18. 29 °COvercastPrecip. chance 8 %Wind 7.8 m/s
  19. 29 °CPartly cloudyPrecip. chance 12 %Wind 8.2 m/s
  20. 29 °CMainly clearPrecip. chance 16 %Wind 8.4 m/s
  21. 29 °CPartly cloudyPrecip. chance 18 %Wind 8.6 m/s
  22. 29 °COvercastPrecip. chance 17 %Wind 8.5 m/s
  23. 29 °CPartly cloudyPrecip. chance 15 %Wind 8.6 m/s
  24. 29 °CClear skyPrecip. chance 14 %Wind 8.5 m/s

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

The next 7 days

Local dates · America/St_Barthelemy

Daily forecast for Gustavia. Source: Open-Meteo. Retrieved .
DayConditionsHigh / LowPrecip. chance*PrecipitationMax wind
Overcast
30 °C / 29 °C18 %0 mm8.6 m/s
Light drizzle
29 °C / 28 °C27 %0.2 mm8.3 m/s
Light drizzle
29 °C / 28 °C29 %0.7 mm7.6 m/s
Thunderstorm
29 °C / 27 °C41 %4.7 mm8.5 m/s
Thunderstorm
29 °C / 28 °C78 %6.6 mm8.7 m/s
Thunderstorm
29 °C / 27 °C56 %9.9 mm8.6 m/s
Light drizzle
29 °C / 29 °C30 %0.6 mm6.2 m/s

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

WeatherVerity answer

Weather in Gustavia today

Today

WeatherVerity forecast for Gustavia: high 30 °C, low 29 °C. Overcast.

Maximum precipitation probability: 18 %. Precipitation: 0 mm.

Underlying forecast data: Open-Meteo · Retrieved

Tomorrow

WeatherVerity forecast for Gustavia: high 29 °C, low 28 °C. Light drizzle.

Maximum precipitation probability: 27 %. Precipitation: 0.2 mm.

Underlying forecast data: Open-Meteo · Retrieved

Model forecasts, not measured observations. · America/St_Barthelemy

Verity Trust

Traceable forecast details, without claiming observed accuracy.

Forecast by
Open-Meteo
Published by
WeatherVerity
Last retrieved
Valid for
2026-09-12T04:00:00.000Z – 2026-09-15T04:00:00.000Z
Local time zone
America/St_Barthelemy
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 3579132 via Open-Meteo
Local time zone
America/St_Barthelemy
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.