Monthly climate averages for Castle Bruce, Dominica. Based on 10-year ERA5 reanalysis data.
Am Tropical Monsoon
Climate OverviewCastle Bruce, Dominica in May has warm conditions, with highs averaging 28°C (82°F). Rain falls on about 14 days this month. Winds are noticeable. Sea temperature reaches 28.4°C (83°F).
This month falls at the end of Spring.
Temperatures remain fairly steady throughout May, 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 19th, averaging 28.3°C (83°F).
Daily averages based on historical data (2016–2025)
Daytime temperatures around 28°C (82°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.
Rain most often builds later in the day, so mornings are typically the driest window and afternoon showers are more likely.
1 of the last 5 yearly records were warmer than this month's long-run average.
| Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January best | 26°C / 24°C | 28°C / 25°C | 14days (48 mm) Wet | 10.5h Excellent | 77% Humid | 6.2 High | Excellent | View Details |
| February best | 26°C / 24°C | 28°C / 24°C | 15days (44 mm) Wet | 10.7h Excellent | 77% Humid | 7.2 Very High | Excellent | View Details |
| March best | 27°C / 24°C | 29°C / 25°C | 14days (44 mm) Wet | 11.2h Excellent | 77% Humid | 8 Very High | Excellent | View Details |
| April best | 27°C / 25°C | 30°C / 26°C | 14days (51 mm) Wet | 11.6h Excellent | 78% Humid | 7.8 Very High | Excellent | View Details |
| May | 28°C / 26°C | 31°C / 27°C | 14days (58 mm) Wet | 11.6h Excellent | 80% Humid | 7.6 Very High | Fair | View Details |
| June | 28°C / 26°C | 31°C / 28°C | 16days (72 mm) Wet | 11.5h Excellent | 80% Humid | 7.8 Very High | Fair | View Details |
| July | 28°C / 26°C | 32°C / 28°C | 22days (112 mm) Wet | 11.5h Excellent | 82% Humid | 7.9 Very High | Wet | View Details |
| August | 29°C / 27°C | 33°C / 29°C | 21days (126 mm) Wet | 11.4h Excellent | 82% Humid | 8.1 Very High | Wet | View Details |
| September | 29°C / 27°C | 34°C / 29°C | 18days (144 mm) Wet | 10.8h Excellent | 82% Humid | 8 Very High | Wet | View Details |
| October | 28°C / 26°C | 33°C / 29°C | 20days (149 mm) Wet | 10.3h Excellent | 82% Humid | 7.2 Very High | Wet | View Details |
| November | 28°C / 26°C | 31°C / 28°C | 20days (136 mm) Wet | 10.1h Excellent | 82% Humid | 6.7 High | Wet | View Details |
| December | 27°C / 25°C | 29°C / 26°C | 19days (72 mm) Wet | 10.1h Excellent | 79% Humid | 5.9 High | Wet | 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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