Temperature
Pleasant by day, mild at night.
Hamilton is usually most comfortable in April and May. Typical daytime highs range from 66–81°F across the year. Rain is frequent in many months.
Pleasant by day, mild at night.
Several rainy days. About 12 wet days this month.
A mix of sunshine and cloud.
In November, afternoons feel about 65° and nights feel near 64°.
Mostly cloudy skies this month.
Wind can affect exposed beach comfort.
November stays around 71°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