Saint Barthélemy · Caribbean
Gustavia
Sea
83.1°F
Air
–
UV
–
Bathtub
Above 28°C
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Gustavia · Port de Gustavia
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Climate · monthly averages
Sea temperature by month
5-year averages (2021–2025). Min/Max are typical daily lows and highs, not record extremes.
75°F
79°F
82°F
86°F
90°F
93°F
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
MinMin °F
8079.8
7978.9
7979.0
8079.5
8181.0
8282.0
8382.6
8383.5
8484.5
8484.0
8382.9
8181.2
AvgAvg °F
8080.5
8079.6
8079.7
8080.3
8282.0
8383.0
8383.5
8484.4
8585.4
8585.1
8483.7
8282.0
MaxMax °F
8181.4
8080.4
8180.8
8181.4
8383.3
8584.6
8584.6
8585.3
8686.1
8686.3
8584.6
8383.1
Warmest in September (85.4°F). Coldest in February (79.6°F). Comfortable for swimming year-round.
About Gustavia
Gustavia anchors the leeward shore of Saint Barthélemy at the head of the Carénage, a natural deep-water harbour that Sweden held from 1784 to 1878 and that now ranks among the Caribbean's busiest superyacht roadsteads. Anse de Grande Saline keeps its undeveloped emerald water on the south coast, while Saint-Jean Beach sits directly beneath the low-altitude landing approach into Gustaf III Airport. Sea temperatures hold between 28 and 29 °C year-round, with the SBH runway barely ten minutes by road.