Today
Sun, Jun 21
Thunderstorm with slight hail
28°27°
- Rain chance
- 83%
- Precip
- 2.7 mm
- Max wind
- 39 km/h
Gustavia weather forecast
, Saint Barthelemy · St_Barthelemy time · 17.90°, -62.85°
Current conditions · 9:15 AM local
Current conditions in Gustavia
28°C
Mainly clear
Feels like 29°C
- Humidity
- 85%
- Wind
- 39 km/h E
- Gusts
- 49 km/h
- UV index
- 0
- Visibility
- 14.8 km
Right now
Gustavia is currently seeing mainly clear, with 28 °C on the thermometer. It feels close to the actual reading at 28 °C. Wind is from the E at 38 km/h. Humidity stands at 80% with sea-level pressure near 1018 hPa.
At a glance
Today
28° / 27°Thunderstorm with slight hail · rain likely (83%)
Tomorrow
28° / 27°Light drizzle · extreme UV
Upcoming · to Saturday
28° / 27°Highs 28°, lows 27°. The most active day looks like Tuesday, when rain chances peak at 53%.
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Next 3 days
Today brings thunderstorm with slight hail with a high of 28 °C and a low of 27 °C. Rain chance peaks at 83% with around 2.7 mm possible. Gusts may reach 49 km/h from the E. Tomorrow brings light drizzle with a high of 28 °C and a low of 27 °C. Gusts may reach 52 km/h from the E. Tuesday looks like thunderstorm; temperatures run from 27 °C up to 28 °C. Rain chance peaks at 53% with around 2.4 mm possible. Gusts may reach 51 km/h from the E.
Tomorrow
Mon, Jun 22
Light drizzle
28°27°
- Rain chance
- 8%
- Precip
- 0.9 mm
- Max wind
- 41 km/h
Tuesday
Tue, Jun 23
Thunderstorm
28°27°
- Rain chance
- 53%
- Precip
- 2.4 mm
- Max wind
- 39 km/h
Next 48 hours
- 12 AM27°83%29 km/h
- 1 AM27°78%32 km/h
- 2 AM27°75%30 km/h
- 3 AM27°76%33 km/h
- 4 AM27°79%33 km/h
- 5 AM27°78%34 km/h
- 6 AM27°70%35 km/h
- 7 AM28°59%38 km/h
- 8 AM27°49%37 km/h
- 9 AM28°41%39 km/h
- 10 AM28°34%37 km/h
- 11 AM28°27%36 km/h
- 12 PM28°19%34 km/h
- 1 PM28°12%33 km/h
- 2 PM28°6%35 km/h
- 3 PM28°4%37 km/h
- 4 PM28°4%37 km/h
- 5 PM28°4%38 km/h
- 6 PM28°3%37 km/h
- 7 PM28°1%36 km/h
- 8 PM28°0%34 km/h
- 9 PM28°0%34 km/h
- 10 PM28°0%37 km/h
- 11 PM28°0%38 km/h
- 12 AM27°1%38 km/h
- 1 AM28°1%37 km/h
- 2 AM27°2%38 km/h
- 3 AM27°2%36 km/h
- 4 AM27°2%37 km/h
- 5 AM28°2%38 km/h
- 6 AM27°1%38 km/h
- 7 AM27°1%38 km/h
- 8 AM27°0%36 km/h
- 9 AM28°0%33 km/h
- 10 AM28°0%34 km/h
- 11 AM28°0%34 km/h
- 12 PM28°0%35 km/h
- 1 PM28°0%34 km/h
- 2 PM28°0%31 km/h
- 3 PM27°2%36 km/h
- 4 PM27°4%36 km/h
- 5 PM27°6%39 km/h
- 6 PM27°7%37 km/h
- 7 PM28°8%38 km/h
- 8 PM28°8%39 km/h
- 9 PM28°6%40 km/h
- 10 PM27°3%41 km/h
- 11 PM27°4%36 km/h
In depth
Across Gustavia right now you'll find mainly clear and a temperature of 28 °C, with the apparent temperature at 28 °C. Today's forecast calls for thunderstorm with slight hail, topping out near 28 °C before falling back to 27 °C overnight. Winds blow mainly from the E around 39 km/h, with gusts up to 49 km/h. Daytime highs hold fairly steady this week, staying within 28 to 28 °C. Rain is in the picture on today, Tuesday, Friday, with roughly 10 mm expected in total across the week. Tomorrow brings light drizzle with a high of 28 °C and a 8% chance of precipitation. The UV index reaches 9 today, so sun protection is sensible during the middle of the day. Sunrise comes at 05:37 and sunset at 18:49, giving 13.2 hours of daylight. Current humidity sits at 80% with pressure near 1018 hPa. Looking further out, Thursday shows thunderstorm with a high around 28 °C, while Saturday ends the week at 28 °C. Forecast details are refreshed throughout the day as new model runs arrive, so check back for the latest figures.
Air quality
55
Moderate
US AQI · European AQI 36
Air quality in Gustavia is currently moderate, with a US AQI of 55 (European AQI 36). The dominant pollutant right now is PM2.5. Unusually sensitive people should consider easing prolonged outdoor exertion. Fine particulate matter (PM2.5) measures 12.2 µg/m³.
Pollutants
- PM2.5
- 12.2 µg/m³
- PM10
- 29.5 µg/m³
- Ozone (O₃)
- 35 µg/m³
- NO₂
- 0.2 µg/m³
- SO₂
- 0.2 µg/m³
- CO
- 96 µg/m³
- Dust
- 22 µg/m³
Sun & UV
- Sunrise
- 5:37 AM
- Sunset
- 6:49 PM
- Daylight
- 13h 12m
- Max UV
- 8.95 Very high
Wind
- Wind
- 39 km/h
- Gusts
- 49 km/h
- Direction
- E (90°)
Farming weather
Soil temperatures today read surface 27.8 °C, 6 cm 27.9 °C, 18 cm 27.9 °C, 54 cm 27.9 °C. Soil moisture sits at 0-1 cm at 0.04 m³/m³, 3-9 cm at 0.04 m³/m³, 27-81 cm at 0.04 m³/m³. For wheat, the root-zone reading is below the ideal 0.2-0.35 m³/m³ band. Reference evapotranspiration totals 37 mm against only 10 mm of expected rain — a 27 mm deficit, so irrigation will be needed this week. No reliable spraying window appears in the next three days — winds or rain interfere; re-check after the next forecast update. Projected growing degree days over the next week: wheat 161, maize 122.
- Topsoil moisture
- 0.035 m³/m³
- Soil temp
- 28°C
- ET₀ today
- 5.28 mm
- Spray window
- Unfavorable
- Rain (next 7d)
- 10.2 mm
- Wind
- 39 km/h
- Humidity
- 85%
Advisory summary
No weather alert thresholds are crossed for Gustavia in the current forecast (derived from forecast data, not official warnings). Conditions may still change — check back for updates.
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All data for Gustavia
| Variable | Value |
|---|---|
| City | Gustavia, , Saint Barthelemy |
| Coordinates | 17.89618, -62.84978 |
| Elevation | 6 m |
| Timezone | America/St_Barthelemy |
| Population | 5,988 |
| Observed at (local) | 9:15 AM |
| Temperature (2 m) | 28°C |
| Apparent temperature | 29°C |
| Relative humidity (2 m) | 85% |
| Dew point (2 m) | 24°C |
| Precipitation (last hour) | 0 mm |
| Rain | 0 mm |
| Showers | 0 mm |
| Snowfall | 0 cm |
| Weather code (WMO) | 1 |
| Cloud cover | 36% |
| Surface pressure | 1018 hPa |
| Sea-level pressure | 1018 hPa |
| Wind speed (10 m) | 39 km/h |
| Wind gusts (10 m) | 49 km/h |
| Wind direction (10 m) | 90° (E) |
| Visibility | 14.8 km |
| UV index | 0 |
| Day / night | Day |
| Today max / min | 28°C / 27°C |
| Today feels-like max / min | 31°C / 28°C |
| Today precipitation sum | 2.7 mm |
| Today rain sum | 0.2 mm |
| Today snowfall sum | 0 cm |
| Today max precip probability | 83% |
| Today max wind / gusts | 39 km/h / 49 km/h |
| Dominant wind direction | 89° (E) |
| Sunrise / sunset | 5:37 AM / 6:49 PM |
| Daylight duration | 13h 12m |
| Sunshine duration | 11h 17m |
| Max UV index | 8.95 |
| Reference evapotranspiration (ET₀) | 5.28 mm |
| Topsoil moisture (0–1 cm) | 0.035 m³/m³ |
| Surface soil temperature | 28°C |
| US AQI | 55 |
| European AQI | 36 |
| PM2.5 | 12.2 µg/m³ |
| PM10 | 29.5 µg/m³ |
| Ozone (O₃) | 35 µg/m³ |
| Nitrogen dioxide (NO₂) | 0.2 µg/m³ |
| Sulphur dioxide (SO₂) | 0.2 µg/m³ |
| Carbon monoxide (CO) | 96 µg/m³ |
| Dust | 22 µg/m³ |
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<iframe src="https://weathertomorrow.cloud/embed/city/bl/00/gustavia" width="320" height="180" frameborder="0" title="Gustavia weather" loading="lazy"></iframe>Frequently asked questions
Will it rain in Gustavia tomorrow?
Rain is unlikely in Gustavia tomorrow; the precipitation chance stays around 8%.
What is the temperature in Gustavia today?
Today Gustavia sees thunderstorm with slight hail with a high of 28 °C and a low of 27 °C.
How hot will it be in Gustavia tomorrow?
Tomorrow's high in Gustavia is forecast at 28 °C with light drizzle.
Is it windy in Gustavia today?
Yes, yes — gusts up to 49 km/h today.
What is the UV index in Gustavia today?
The UV index peaks at 9 today, which is very high.
What time is sunrise and sunset in Gustavia today?
The sun rises at 05:37 and sets at 18:49 local time.
Is the air quality in Gustavia good today?
Air quality is moderate right now, with a US AQI reading of 55.