Temperature
Warm by day, warm at night.
Warm days and some sun. Humid air is the main drawback.

Warm by day, warm at night.
It rains on most days. About 19 wet days this month.
Plenty of sun this month.
Very humid air is a major factor this month.
In December, afternoons feel about 85° and nights feel near 82°.
Partly cloudy skies this month.
Calm winds are typical in December.
December late afternoons are around 80°F, and early evening stays near 79°F.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 81 | 76 | 2.5 | 17 | 10.6 | 84 | 81 |
| Feb | 80 | 75 | 2.0 | 16 | 10.9 | 84 | 81 |
| Mar | 81 | 75 | 2.6 | 18 | 11.5 | 84 | 81 |
| Apr | 82 | 77 | 2.8 | 17 | 11.9 | 84 | 82 |
| May | 84 | 78 | 5.5 | 21 | 11.3 | 85 | 83 |
| Jun | 85 | 79 | 5.1 | 20 | 11.6 | 86 | 83 |
| Jul | 86 | 80 | 4.2 | 18 | 12.0 | 84 | 84 |
| Aug | 86 | 80 | 5.2 | 20 | 11.5 | 84 | 85 |
| Sep | 86 | 80 | 6.1 | 22 | 11.1 | 85 | 85 |
| Oct | 85 | 79 | 8.2 | 25 | 10.4 | 86 | 85 |
| Nov | 83 | 78 | 5.3 | 20 | 10.0 | 85 | 84 |
| Dec | 82 | 77 | 3.6 | 19 | 10.1 | 85 | 83 |
Similar climates
Want a side-by-side climate view? Compare Port Antonio 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