Temperature
Pleasant by day, mild at night.
Warm coastal days and plenty of sun.
Pleasant by day, mild at night.
Several rainy days. About 10 wet days, the lowest monthly average.
A mix of sunshine and cloud.
Humid air and frequent rain shape this month.
In May, afternoons feel about 67° and nights feel near 66°.
Partly cloudy skies this month.
Breezy conditions are typical in May. More a comfort consideration than a planning concern.
May stays around 70°F through the day and night.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 67 | 63 | 4.3 | 14 | 7.3 | 71 | 70 |
| Feb | 67 | 63 | 3.9 | 12 | 8.3 | 72 | 69 |
| Mar | 66 | 62 | 4.2 | 12 | 9.3 | 72 | 68 |
| Apr | 68 | 65 | 3.2 | 10 | 10.9 | 75 | 69 |
| May | 71 | 69 | 3.6 | 10 | 11.5 | 80 | 72 |
| Jun | 76 | 74 | 4.1 | 12 | 11.8 | 82 | 77 |
| Jul | 80 | 78 | 4.2 | 15 | 12.2 | 82 | 81 |
| Aug | 81 | 78 | 5.0 | 17 | 11.9 | 81 | 83 |
| Sep | 80 | 77 | 5.6 | 15 | 10.8 | 79 | 82 |
| Oct | 77 | 74 | 5.6 | 14 | 9.1 | 75 | 79 |
| Nov | 73 | 69 | 4.0 | 12 | 8.4 | 71 | 76 |
| Dec | 69 | 66 | 3.6 | 11 | 7.5 | 71 | 73 |
Similar climates
Want a side-by-side climate view? Compare Hamilton with St. Lucia.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jun 1, 2026
Data & methodology