Monthly climate averages for Gustavia, Saint Barthélemy. Based on 10-year ERA5 reanalysis data.
Am Tropical Monsoon
Climate OverviewGustavia, Saint Barthélemy in June has warm conditions, with highs averaging 27.7°C (82°F). Rain falls on about 10 days this month. Winds are noticeable. Sea temperature reaches 28.7°C (84°F).
This month falls at the beginning of Summer.
Temperatures remain fairly steady throughout June, with daily highs around 28°C (82°F).
Rainfall is heaviest during the last third of the month, while the middle tends to be drier.
The warmest days tend to fall around the 26th, averaging 27.9°C (82°F).
Daily averages based on historical data (2016–2025)
Daytime temperatures around 28°C (82°F) are ideal for full-day outdoor exploration.
Wet weather can spread across much of the day, so it is best to keep outdoor plans flexible.
Recent yearly records for June have stayed close to the long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 26°C / 25°C | 27°C / 25°C | 10days (28 mm) Wet | 10.3h Excellent | 77% Humid | 6.7 High | Excellent | View Details |
| February best | 26°C / 24°C | 27°C / 24°C | 8days (35 mm) Wet | 10.7h Excellent | 77% Humid | 7.6 Very High | Excellent | View Details |
| March best | 26°C / 25°C | 28°C / 25°C | 8days (21 mm) Wet | 11.1h Excellent | 76% Humid | 8.7 Very High | Excellent | View Details |
| April best | 26°C / 25°C | 29°C / 26°C | 9days (40 mm) Wet | 11.4h Excellent | 78% Humid | 9 Very High | Excellent | View Details |
| May | 27°C / 26°C | 30°C / 27°C | 11days (46 mm) Wet | 11.7h Excellent | 80% Humid | 8.8 Very High | Good | View Details |
| June | 28°C / 27°C | 31°C / 28°C | 10days (41 mm) Wet | 11.8h Excellent | 80% Humid | 8.5 Very High | Good | View Details |
| July | 28°C / 27°C | 31°C / 28°C | 16days (73 mm) Wet | 11.7h Excellent | 81% Humid | 8.7 Very High | Fair | View Details |
| August | 28°C / 27°C | 33°C / 29°C | 14days (85 mm) Wet | 11.3h Excellent | 81% Humid | 8.9 Very High | Fair | View Details |
| September | 29°C / 27°C | 33°C / 30°C | 17days (128 mm) Wet | 10.7h Excellent | 81% Humid | 8.5 Very High | Fair | View Details |
| October | 28°C / 27°C | 32°C / 29°C | 16days (130 mm) Wet | 10.1h Excellent | 80% Humid | 7.5 Very High | Fair | View Details |
| November | 27°C / 26°C | 30°C / 28°C | 14days (105 mm) Wet | 9.6h Good | 80% Humid | 6.7 High | Good | View Details |
| December best | 27°C / 25°C | 28°C / 26°C | 11days (36 mm) Wet | 10h Excellent | 77% Humid | 6.3 High | Excellent | View Details |
Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.
A waterproof jacket or compact umbrella is recommended for occasional showers.
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