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 October 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 October
On the left, the averages observed every month of October on the Saint Barthelemy beaches. The trends for next month are, slightly lower average daytime temperatures, a bathing water in Atlantic Ocean and Caribbean Sea which loses degrees, more abundant rains (cyclonic risks) with cooler nights.
Sunset and sunrise times for SAINT BARTHELEMY
Local time : October 2025, Friday 10, 04:54 AM
Sunrise time : 06:06 am, point A
Sunset time : 5:50 pm, point B
Duration of daylight : 11:44 / 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.
Saturday
October 11, 2025
8 am
80.1°F
27°C
Moderate rain
Humidity 83%
Sea 85°F/29°C
Saturday
October 11, 2025
11 am
79.7°F
27°C
Moderate rain
Humidity 86%
Sea 85°F/29°C
Saturday
October 11, 2025
2 pm
79.6°F
27°C
Moderate rain
Humidity 85%
Sea 85°F/29°C
Saturday
October 11, 2025
5 pm
81.4°F
28°C
Light rain
Humidity 77%
Sea 85°F/29°C
Saturday
October 11, 2025
8 pm
81.6°F
28°C
Light rain
Humidity 73%
Sea 85°F/29°C
Saturday
October 11, 2025
11 pm
82.3°F
28°C
Light rain
Humidity 71%
Sea 85°F/29°C
Sunday
October 12, 2025
8 am
81.6°F
28°C
Light rain
Humidity 79%
Sea 85°F/29°C
Sunday
October 12, 2025
11 am
83.3°F
29°C
Light rain
Humidity 72%
Sea 85°F/29°C
Sunday
October 12, 2025
2 pm
83.3°F
29°C
Overcast clouds
Humidity 72%
Sea 85°F/29°C
Sunday
October 12, 2025
5 pm
83.6°F
29°C
Light rain
Humidity 71%
Sea 85°F/29°C
Sunday
October 12, 2025
8 pm
83.3°F
29°C
Broken clouds
Humidity 70%
Sea 85°F/29°C
Sunday
October 12, 2025
11 pm
83.6°F
29°C
Broken clouds
Humidity 68%
Sea 85°F/29°C
Monday
October 13, 2025
8 am
83.4°F
29°C
Overcast clouds
Humidity 72%
Sea 85°F/29°C
Monday
October 13, 2025
11 am
83.2°F
29°C
Broken clouds
Humidity 70%
Sea 85°F/29°C
Monday
October 13, 2025
2 pm
83.5°F
29°C
Scattered clouds
Humidity 66%
Sea 85°F/29°C
Monday
October 13, 2025
5 pm
83.3°F
29°C
Few clouds
Humidity 72%
Sea 85°F/29°C
Monday
October 13, 2025
8 pm
83.1°F
29°C
Light rain
Humidity 75%
Sea 85°F/29°C
Monday
October 13, 2025
11 pm
83.1°F
29°C
Light rain
Humidity 73%
Sea 85°F/29°C
Tuesday
October 14, 2025
8 am
82.3°F
28°C
Light rain
Humidity 76%
Sea 85°F/29°C
Tuesday
October 14, 2025
11 am
82.3°F
28°C
Light rain
Humidity 76%
Sea 85°F/29°C
Tuesday
October 14, 2025
2 pm
82.9°F
29°C
Light rain
Humidity 72%
Sea 85°F/29°C
Tuesday
October 14, 2025
5 pm
82.8°F
29°C
Scattered clouds
Humidity 74%
Sea 85°F/29°C
Tuesday
October 14, 2025
8 pm
82.6°F
29°C
Light rain
Humidity 74%
Sea 85°F/29°C
Tuesday
October 14, 2025
11 pm
83°F
29°C
Light rain
Humidity 73%
Sea 85°F/29°C
Wednesday
October 15, 2025
8 am
82.5°F
29°C
Clear sky
Humidity 66%
Sea 85°F/29°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!
