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 Celsius. You can also view the temperatures in degrees Fahrenheit.

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 28 degrees Celsius 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.

Caribbean weather in August: average daily temperature and monthly rainfall
Temper­ature °C Island Place Total Rainfall
High Low Milli­metres Days
31 25 Antigua St John's 101 13
32 26 Aruba Beatrix Airport 25 5
32 27 Bonaire Flamingo Airport 35 4
32 24 Bahamas Nassau 236 19
30 25 Barbados Bridgetown 73
33 23 Cayman Islands 161 18
32 24 Cuba Havana 100 9
32 26 Curaçao Hato Airport 42 5
31 24 Dominica Melville Hall Airport 243
31 25 Dominican Republic Punta Cana 103 10
32 24 Guadeloupe Pointe-a-Pitre 198
33 24 Jamaica Kingston 98 9
31 24 Martinique Lamentin 252 21
32 26 Puerto Rico San Juan 139 19
31 26 Saba The Bottom 77 6
31 26 St. Barthelemy Gustavia 106 12
31 25 St. Croix (US VI) Christiansted 75 14
31 25 St. Eustatius Oranjestad 107 12
31 25 St. John (US VI) Cruz Bay 98 16
32 26 St. Kitts Basseterre 86
31 25 St. Lucia Vieux Fort 158 21
32 26 St. Maarten Princess Juliana AP 99 14
32 26 St. Thomas (US VI) Charlotte Amalie 95 15
32 23 Trinidad Port of Spain 244 19
30 24 Tobago Scarborough 163 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.

Temperature & Rainfall
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