Temperature
Warm by day, warm at night.
Warm days and plenty of sun.
Warm by day, warm at night.
Several rainy days, mostly brief and on-and-off. About 12 wet days, fewer than in most months.
Plenty of sun this month.
Warm days, with humid periods.
In April, afternoons feel about 83° and nights feel near 78°.
Partly cloudy skies this month.
April's typical breeze keeps the air from feeling as stagnant.
April late afternoons are around 82°F, easing to about 79°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 82 | 75 | 1.4 | 13 | 10.8 | 74 | 81 |
| Feb | 82 | 75 | 0.9 | 10 | 11.1 | 71 | 80 |
| Mar | 83 | 75 | 1.1 | 11 | 11.6 | 71 | 80 |
| Apr | 84 | 76 | 1.5 | 12 | 11.8 | 73 | 81 |
| May | 85 | 78 | 1.7 | 13 | 11.7 | 74 | 82 |
| Jun | 85 | 78 | 2.8 | 16 | 11.5 | 76 | 83 |
| Jul | 85 | 78 | 3.6 | 21 | 11.6 | 78 | 83 |
| Aug | 85 | 78 | 4.1 | 22 | 11.4 | 79 | 84 |
| Sep | 86 | 78 | 4.0 | 19 | 11.1 | 78 | 85 |
| Oct | 85 | 78 | 4.9 | 21 | 10.7 | 79 | 85 |
| Nov | 84 | 77 | 4.0 | 19 | 10.6 | 79 | 84 |
| Dec | 83 | 76 | 1.7 | 14 | 10.7 | 75 | 82 |
Similar climates
Want a side-by-side climate view? Compare St. Lucia with Dominica.
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