Caribbean Weather in August
Information on the weather in August for cities and beach towns throughout the Caribbean has been pulled together here.
The August temperatures and rainfall given in the table below allow you to compare the climate for places on two dozen islands. The monthly averages are based on historical weather records.
These temperatures are in degrees Fahrenheit. You can also view the temperatures in degrees Celsius.
Temperature
Although normally one of the hottest months for most Caribbean islands, August is only a few degrees warmer than the coolest months of the year. The ocean moderates island temperatures.
Ocean waters are also at their warmest in August with an average of around 83 degrees Fahrenheit throughout the Caribbean Sea.
Rain
August weather in the Caribbean builds up for the rainy season. This is the wettest month of the year for Nassau in the Bahamas and Port of Spain in Trinidad. It's even rainier yet on Martinique and Dominica.
Hurricanes
Hurricane activity grows in August. The greatest chances of encountering a hurricane this month are on eastern Jamaica, Haiti, and the eastern Caribbean islands, such as Guadeloupe. Major storms in August most commonly affect Cuba and the Bahamas.
Hurricanes aren't expected in the southern Caribbean. The region from Aruba to Tobago falls outside the Atlantic hurricane path.
| Temperature °F | Island | Place | Total Rainfall | ||
|---|---|---|---|---|---|
| High | Low | Inches | Days | ||
| 88 | 78 | Antigua | St John's | 4.0 | 13 |
| 91 | 80 | Aruba | Beatrix Airport | 1.0 | 5 |
| 89 | 80 | Bonaire | Flamingo Airport | 1.4 | 4 |
| 91 | 75 | Bahamas | Nassau | 9.3 | 19 |
| 86 | 77 | Barbados | Bridgetown | 2.9 | – |
| 92 | 73 | Cayman Islands | – | 6.4 | 18 |
| 89 | 75 | Cuba | Havana | 3.9 | 9 |
| 90 | 79 | Curaçao | Hato Airport | 1.6 | 5 |
| 87 | 76 | Dominica | Melville Hall Airport | 9.6 | – |
| 87 | 77 | Dominican Republic | Punta Cana | 4.1 | 10 |
| 89 | 75 | Guadeloupe | Pointe-a-Pitre | 7.8 | – |
| 91 | 76 | Jamaica | Kingston | 3.9 | 9 |
| 87 | 75 | Martinique | Lamentin | 9.9 | 21 |
| 89 | 78 | Puerto Rico | San Juan | 5.5 | 19 |
| 88 | 80 | Saba | The Bottom | 3.0 | 6 |
| 88 | 78 | St. Barthelemy | Gustavia | 4.2 | 12 |
| 88 | 77 | St. Croix (US VI) | Christiansted | 3.0 | 14 |
| 88 | 77 | St. Eustatius | Oranjestad | 4.2 | 12 |
| 88 | 76 | St. John (US VI) | Cruz Bay | 3.8 | 16 |
| 90 | 78 | St. Kitts | Basseterre | 3.4 | – |
| 87 | 77 | St. Lucia | Vieux Fort | 6.2 | 21 |
| 89 | 79 | St. Maarten | Princess Juliana AP | 3.9 | 14 |
| 90 | 78 | St. Thomas (US VI) | Charlotte Amalie | 3.7 | 15 |
| 89 | 73 | Trinidad | Port of Spain | 9.6 | 19 |
| 87 | 75 | Tobago | Scarborough | 6.4 | 15 |
References
NOAA. National Weather Service. National Hurricane Center.
NOAA. Ocean Climate Laboratory. World Ocean Atlas 2009.
Rainfall and temperature data come from each island's meteorological organization.