Caribbean Weather in September

Information on the weather in September for cities and beach towns throughout the Caribbean has been pulled together here.

The September 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.

September dishes up some wild weather in the Caribbean. But your chances of experiencing a major storm depend upon what island you're on.

Rain

In September the rainy season descends upon the Caribbean. Still, there are some dry spots, notably the southern islands of Aruba, Bonaire and Curaçao.

Hurricanes and Storms

September is when hurricanes become most active in the Caribbean. Hurricanes are most likely now to approach the US Virgin Islands, Puerto Rico and the eastern shores of Dominican Republic. In this region, there's an eight percent chance that a hurricane will come within 100 miles of land in September.

Severe stormy weather often hits the eastern Caribbean islands during September, where a named tropical storm arrives about once every five years. Storms are less common farther south.

Temperature

September temperatures are similar to those of other summer months. The ocean averages around 83 degrees Fahrenheit.

Caribbean weather in September: average daily temperature and monthly rainfall
Temper­ature °F Island Place Total Rainfall
High Low Inches Days
87 77 Antigua St John's 5.5 11
91 80 Aruba Beatrix Airport 1.4 4
89 80 Bonaire Flamingo Airport 1.5 5
89 85 Bahamas Nassau 6.5 17
86 77 Barbados Bridgetown 3.1
91 73 Cayman Islands 8.0 20
88 75 Cuba Havana 5.7 10
91 80 Curaçao Hato Airport 1.9 5
87 75 Dominica Melville Hall Airport 11.7
88 76 Dominican Republic Punta Cana 4.0 10
89 74 Guadeloupe Pointe-a-Pitre 9.3
90 75 Jamaica Kingston 4.5 11
87 74 Martinique Lamentin 9.3 19
89 78 Puerto Rico San Juan 5.8 17
87 80 Saba The Bottom 2.4 7
88 78 St. Barthelemy Gustavia 5.1 12
88 79 St. Croix (US VI) Christiansted 4.6 15
88 76 St. Eustatius Oranjestad 4.9 12
88 76 St. John (US VI) Cruz Bay 5.5 16
90 78 St. Kitts Basseterre 2.8
88 77 St. Lucia Vieux Fort 7.8 20
89 79 St. Maarten Princess Juliana AP 5.5 14
90 78 St. Thomas (US VI) Charlotte Amalie 5.6 15
90 74 Trinidad Port of Spain 7.5 16
87 75 Tobago Scarborough 6.7 14
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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