Saint Barthélemy · Caribbean
Gustavia
Sea
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Air
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UV
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More like this
Climate · monthly averages
Sea temperature by month
30-year averages (1996–2025). Min/Max are typical daily lows and highs, not record extremes.
72°F
75°F
79°F
82°F
86°F
90°F
January
79.9°F(79°F–81°F)
February
79.1°F(78°F–80°F)
March
79.2°F(78°F–81°F)
April
80.0°F(79°F–82°F)
May
81.4°F(80°F–83°F)
June
82.5°F(81°F–84°F)
July
82.9°F(82°F–84°F)
August
83.7°F(83°F–85°F)
September
84.3°F(83°F–86°F)
October
84.1°F(83°F–85°F)
November
82.9°F(82°F–84°F)
December
81.3°F(80°F–82°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 | 7979.0 | 7878.0 | 7877.9 | 7978.7 | 8080.3 | 8181.2 | 8281.8 | 8382.7 | 8383.3 | 8383.1 | 8282.1 | 8080.2 |
| AvgAvg °F | 8079.9 | 7979.1 | 7979.2 | 8080.0 | 8181.4 | 8382.5 | 8382.9 | 8483.7 | 8484.3 | 8484.1 | 8382.9 | 8181.3 |
| MaxMax °F | 8181.0 | 8080.3 | 8180.8 | 8281.5 | 8382.9 | 8483.8 | 8484.3 | 8585.0 | 8686.0 | 8585.3 | 8483.9 | 8282.3 |
Warmest in September (84.3°F). Coldest in February (79.1°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.