Gustavia, SAINT BARTHELEMY and its best beaches
Climate - Temperatures and rainfall - Cyclones - Atlantic Ocean and Caribbean Sea
Gustavia: Temperatures during the day, at night, rain and bathing conditions
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January Day temperature  79°F / 26°C |
Night temp.  76°F / 24°C |
Bathing temperature  77°F / 25°C |
Rain  069 mm |
Conditions 
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February Day temperature 79°F / 26°C |
Night temp. 76°F / 24°C |
Bathing temperature 77°F / 25°C |
Rain 041 mm |
Conditions
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March Day temperature 79°F / 26°C |
Night temp. 76°F / 24°C |
Bathing temperature 77°F / 25°C |
Rain 061 mm |
Conditions
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April Day temperature 81°F / 27°C |
Night temp. 77°F / 25°C |
Bathing temperature 79°F / 26°C |
Rain 038 mm |
Conditions 
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May Day temperature 81°F / 27°C |
Night temp. 79°F / 26°C |
Bathing temperature 81°F / 27°C |
Rain 122 mm |
Conditions 
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June Day temperature 83°F / 28°C |
Night temp. 81°F / 27°C |
Bathing temperature 83°F / 28°C |
Rain 064 mm |
Conditions   
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July Day temperature 83°F / 28°C |
Night temp. 81°F / 27°C |
Bathing temperature 83°F / 28°C |
Rain 089 mm |
Conditions
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August Day temperature 83°F / 28°C |
Night temp. 83°F / 28°C |
Bathing temperature 85°F / 29°C |
Rain 117 mm |
Conditions
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September Day temperature 83°F / 28°C |
Night temp. 81°F / 27°C |
Bathing temperature 86°F / 30°C |
Rain 104 mm |
Conditions
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October Day temperature 83°F / 28°C |
Night temp. 81°F / 27°C |
Bathing temperature 85°F / 29°C |
Rain 130 mm |
Conditions
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November Day temperature 81°F / 27°C |
Night temp. 79°F / 26°C |
Bathing temperature 83°F / 28°C |
Rain 142 mm |
Conditions
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December Day temperature 79°F / 26°C |
Night temp. 76°F / 24°C |
Bathing temperature 79°F / 26°C |
Rain 071 mm |
Conditions
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Saint Barthelemy : climate and when to go to Gustavia
Climate Tropical with 2 seasons, a mild season from November to April and a warm season from May to October. The climate of St. Barts is a bit special since it is beautiful all year round and the precipitation is few. Beware of cyclonic depressions from September to November. Saint Barthelemy can be visited all year round but the best period is from December to May. The most favorable period to leave is December January February April and May and the least favorable time to leave is September and October.
| January Fine |
February Fine |
March Fine |
April Fine |
May Acceptable |
June Pecfect |
July Acceptable |
August Acceptable |
September Acceptable |
October Acceptable |
November Risky |
December Fine |
When to go? The hottest month for the beach, lazing around and swimming is September. Warning, September is a month with cyclonic risks, heavy showers may occur, otherwise other periods are possible. The coolest month is January, if you can not stand the heat too much. The driest month of the year is April, if you do not like the rain at all.
Click on
Gustavia to display its climate.
Graphs and temperature curves with average precipitation over the year
Precipitation, rainfall, cyclone: SAINT BARTHELEMY
Temperatures of bathing water around Gustavia
Landmarks
Perfect conditions to enjoy the beach. Favorable conditions for enjoying the beach. Cloudy with sunny spells and thunderstorms.
Very strong tropical or monsoon rains. Months at risk of cyclones with alerts level 1 to 5. Nice swimming at more than 26°C / 79°F. Everything is perfect for traveling.Cyclonic risks (6 month(s))
Cyclone mapping
Atlantic Ocean and Caribbean Sea
Climate May 2025
Gustavia sunshine in summer and winter
The sun at its zenith, that means well perpendicular to the surface of the Earth, sending 100% of radiation and heat. Gustavia receives in winter (january), 75% of sun power and 99% during summer time (july).
The average temperature and sunshine deviations between summer and winter are 24%. This small gap means that the temperature at sea does not really vary and that the sea remains warm enough in summer and winter. The air is also hot all year round without great thermal amplitude.
Average temperatures and rainfall for a stay in May
On the left, the averages observed every month of May on the Saint Barthelemy beaches. The trends for next month are, slightly warmer daytime temperatures, a bathing water in Atlantic Ocean and Caribbean Sea which takes a few degrees, less rainfall (cyclonic risks) with warmer nights.
Sunset and sunrise times for SAINT BARTHELEMY
Local time : May 2025, Tuesday 13, 12:10 AM
Sunrise time : 05:41 am, point A
Sunset time : 6:33 pm, point B
Duration of daylight : 12:52 / 24:00
Jet lag : GMT-4
The average monthly UV index of SAINT BARTHELEMY
What is the period of mosquitoes virulence over the year?
Weather forecast for Gustavia
Here are the current 5-day forecasts for Saint Barthélemy / Gustavia. Temperatures are spaced 3 hours apart for each day. The summary of the state of the sky gives the trend of the week. The sea temperature at is a monthly average. In lagoons or seashores where the bathing water is shallow, you can add some degrees.
Wednesday
May 14, 2025
8 am
79.8°F
27°C
Light rain
Humidity 75%
Sea 81°F/27°C
Wednesday
May 14, 2025
11 am
79.6°F
27°C
Light rain
Humidity 76%
Sea 81°F/27°C
Wednesday
May 14, 2025
2 pm
80.2°F
27°C
Few clouds
Humidity 73%
Sea 81°F/27°C
Wednesday
May 14, 2025
5 pm
80.6°F
27°C
Few clouds
Humidity 73%
Sea 81°F/27°C
Wednesday
May 14, 2025
8 pm
80.7°F
28°C
Few clouds
Humidity 73%
Sea 81°F/27°C
Wednesday
May 14, 2025
11 pm
80.4°F
27°C
Scattered clouds
Humidity 75%
Sea 81°F/27°C
Thrusday
May 15, 2025
8 am
80.3°F
27°C
Light rain
Humidity 78%
Sea 81°F/27°C
Thrusday
May 15, 2025
11 am
80.1°F
27°C
Light rain
Humidity 79%
Sea 81°F/27°C
Thrusday
May 15, 2025
2 pm
80.2°F
27°C
Light rain
Humidity 79%
Sea 81°F/27°C
Thrusday
May 15, 2025
5 pm
80.7°F
28°C
Light rain
Humidity 78%
Sea 81°F/27°C
Thrusday
May 15, 2025
8 pm
81°F
28°C
Broken clouds
Humidity 79%
Sea 81°F/27°C
Thrusday
May 15, 2025
11 pm
80.7°F
28°C
Light rain
Humidity 79%
Sea 81°F/27°C
Friday
May 16, 2025
8 am
80°F
27°C
Light rain
Humidity 80%
Sea 81°F/27°C
Friday
May 16, 2025
11 am
80°F
27°C
Light rain
Humidity 80%
Sea 81°F/27°C
Friday
May 16, 2025
2 pm
80.2°F
27°C
Light rain
Humidity 80%
Sea 81°F/27°C
Friday
May 16, 2025
5 pm
80.8°F
28°C
Light rain
Humidity 79%
Sea 81°F/27°C
Friday
May 16, 2025
8 pm
80.8°F
28°C
Light rain
Humidity 80%
Sea 81°F/27°C
Friday
May 16, 2025
11 pm
80.5°F
27°C
Light rain
Humidity 81%
Sea 81°F/27°C
Saturday
May 17, 2025
8 am
77.9°F
26°C
Moderate rain
Humidity 84%
Sea 81°F/27°C
Saturday
May 17, 2025
11 am
78.4°F
26°C
Moderate rain
Humidity 83%
Sea 81°F/27°C
Saturday
May 17, 2025
2 pm
79.7°F
27°C
Moderate rain
Humidity 83%
Sea 81°F/27°C
Saturday
May 17, 2025
5 pm
79.2°F
27°C
Moderate rain
Humidity 85%
Sea 81°F/27°C
Saturday
May 17, 2025
8 pm
77.8°F
26°C
Moderate rain
Humidity 84%
Sea 81°F/27°C
Saturday
May 17, 2025
11 pm
77.5°F
26°C
Light rain
Humidity 82%
Sea 81°F/27°C
Weather uncertainties 2025 to go to Gustavia ?
When traveling in the tropics as a seaside, rain is not welcome. If you see this indicator, with possible storms, that does not mean that it will rain all day long. When we observe the local rainfall, it is either really zero or very weak. Meteorologists prefer to be pessimistic. So observe below, the skies photographed during a week announced stormy in Asia. It did not rain once. I invite you to integrate this parameter before going to Gustavia for a good trip to the sun!
