Caribbean weather in August
In August, the Caribbean averages 30 to 32°C by day across Barbados, Antigua, St Lucia, Jamaica, Punta Cana, Aruba, Cuba (Varadero) and the Bahamas. Jamaica is the warmest at 32°C, St Lucia the coolest at 30°C. The sea is 28 to 31°C.
Caribbean in August, place by place
Warmest first. Anywhere at 24°C or more is proper beach weather. Tap a place for its full August detail.
| Destination | Day | Night | Sea | Rain | Flight |
|---|---|---|---|---|---|
| Jamaica (Montego Bay)Jamaica | 32°C | 25°C | 30°C | 132 mm | 9½h |
| VaraderoCuba | 31°C | 26°C | 31°C | 133 mm | 9h |
| ArubaAruba | 31°C | 27°C | 28°C | 35 mm | 9½h |
| NassauBahamas | 31°C | 27°C | 31°C | 90 mm | 8½h |
| AntiguaAntigua and Barbuda | 30°C | 26°C | 30°C | 100 mm | 8h |
| BarbadosBarbados | 30°C | 26°C | 30°C | 99 mm | 8½h |
| Punta CanaDominican Republic | 30°C | 26°C | 29°C | 142 mm | 8½h |
| St LuciaSt Lucia | 30°C | 26°C | 30°C | 118 mm | 8½h |
Heading to the Caribbean in August?
Share the places you've saved on TikTok and Instagram for the Caribbean to Dream Trip. It pins them on a map and builds your days around them.
Caribbean in August: quick answers
Is the Caribbean hot in August?
In August, the Caribbean averages 30 to 32°C by day across Barbados, Antigua, St Lucia, Jamaica, Punta Cana, Aruba, Cuba (Varadero) and the Bahamas. Jamaica is the warmest at 32°C, St Lucia the coolest at 30°C. The sea is 28 to 31°C. August is hot in Jamaica: proper beach weather.
Where is warmest in the Caribbean in August?
Jamaica, at an average high of 32°C. The driest is Aruba, with about 35 mm of rain.
Can you swim in the sea in the Caribbean in August?
Yes: Varadero (31°C), Nassau (31°C), Jamaica (30°C), Antigua (30°C), Barbados (30°C), St Lucia (30°C), Punta Cana (29°C), Aruba (28°C) have sea temperatures of 21°C or more, comfortable without a wetsuit.
How we measured this
Caribbean here means Barbados, Antigua, St Lucia, Jamaica, Punta Cana, Aruba, Cuba (Varadero) and the Bahamas: the places we measure. Figures are averages of every day from 2016 to 2025 from the Open-Meteo historical weather archive (ECMWF ERA5); sea temperatures are 2023 to 2025 averages. Rain is the average monthly total, and 150 mm or more counts as rainy season.
Planning the Caribbean in August?
Save the places you find on TikTok and Instagram for the Caribbean to one map, and Dream Trip turns them into a day-by-day plan.
