In September warmest sea in Caribbean Sea is usually observed in the following locations: Key West, Cayo Largo, Niquero.
Table below shows the average sea water temperature for marine resorts of Caribbean Sea in September for the last three years.
| Place name | September 2026 | September 2025 | September 2024 |
|---|---|---|---|
| Key West | 88.7°F | 86.9°F | 87.4°F |
| Cayo Largo | 88.6°F | 88.1°F | 87.7°F |
| Niquero | 88.6°F | 87.7°F | 88.0°F |
| Manzanillo | 88.3°F | 87.3°F | 88.2°F |
| Pinar del Rio | 88.1°F | 87.3°F | 87.7°F |
| Chetumal | 87.9°F | 86.8°F | 87.6°F |
| Islamorada | 87.9°F | 86.7°F | 87.3°F |
| Key Largo | 87.9°F | 86.6°F | 87.1°F |
| George Town | 87.8°F | 87.4°F | 86.9°F |
| Grand Cayman | 87.8°F | 87.4°F | 86.9°F |
| Little Cayman | 87.7°F | 87.5°F | 87.4°F |
| Cienfuegos | 87.6°F | 87.4°F | 87.3°F |
| Cayman Brac | 87.6°F | 87.6°F | 87.3°F |
| Campeche | 87.5°F | 87.0°F | 87.7°F |
| Varadero | 87.5°F | 86.6°F | 86.8°F |
| Trinidad | 87.5°F | 87.4°F | 87.3°F |
| Carrefour | 87.5°F | 86.9°F | 87.5°F |
| Port au Prince | 87.5°F | 86.8°F | 87.5°F |
| Cayo Coco | 87.3°F | 87.4°F | 87.3°F |
| San Pedro | 87.3°F | 86.7°F | 87.4°F |
| Belize | 87.2°F | 86.6°F | 87.3°F |
| Cayo Guillermo | 87.2°F | 87.3°F | 87.2°F |
| Santiago de Cuba | 87.2°F | 86.6°F | 87.0°F |
| Santa Maria | 87.2°F | 87.1°F | 87.0°F |
| Cayo Santa Maria | 87.2°F | 87.1°F | 86.9°F |
| Havana | 87.1°F | 86.1°F | 86.2°F |
| Eleuthera | 87.0°F | 86.0°F | 86.0°F |
| Ambergis Caye | 87.0°F | 86.6°F | 87.3°F |
| New Providence | 87.0°F | 86.0°F | 86.1°F |
| Puerto Barrios | 87.0°F | 86.4°F | 87.8°F |
| San Pedro Sula | 86.9°F | 86.5°F | 88.0°F |
| Nassau | 86.9°F | 86.0°F | 86.1°F |
| Andros | 86.7°F | 86.0°F | 86.0°F |
| Livingston | 86.7°F | 86.6°F | 88.1°F |
| Westmoreland | 86.6°F | 87.1°F | 86.9°F |
| Placencia | 86.6°F | 86.4°F | 88.0°F |
| Providenciales | 86.5°F | 86.5°F | 86.5°F |
| Punta Gorda | 86.5°F | 86.3°F | 87.7°F |
| Negril | 86.4°F | 87.1°F | 87.1°F |
| Puerto Cortes | 86.4°F | 86.7°F | 88.1°F |
| Montego Bay | 86.3°F | 86.7°F | 86.7°F |
| Cozumel | 86.3°F | 85.9°F | 86.5°F |
| Tela | 86.3°F | 87.0°F | 88.2°F |
| Matanzas | 86.3°F | 85.8°F | 85.7°F |
| Puerto Morelos | 86.3°F | 85.6°F | 86.4°F |
| Mahahual | 86.2°F | 86.0°F | 86.7°F |
| Playa Santa Lucia | 86.2°F | 86.5°F | 86.3°F |
| La Ceiba | 86.2°F | 87.1°F | 87.9°F |
| Playa del Carmen | 86.2°F | 85.8°F | 86.5°F |
| Puerto Aventuras | 86.1°F | 85.7°F | 86.4°F |
| Riviera Maya | 86.1°F | 85.7°F | 86.4°F |
| Tulum | 86.1°F | 85.6°F | 86.4°F |
| Cap Haitien | 86.0°F | 86.4°F | 86.7°F |
| Runaway Bay | 85.9°F | 86.5°F | 86.8°F |
| Grand Turk | 85.9°F | 85.7°F | 85.9°F |
| Cockburn | 85.9°F | 85.7°F | 85.9°F |
| Samana | 85.9°F | 85.9°F | 86.1°F |
| Cancun | 85.8°F | 85.0°F | 86.0°F |
| Salt Cay | 85.8°F | 85.6°F | 85.9°F |
| Ponce | 85.7°F | 86.3°F | 87.0°F |
| Mayaguez | 85.7°F | 86.1°F | 86.8°F |
| Los Cayitos | 85.7°F | 86.2°F | 87.1°F |
| Baracoa | 85.7°F | 85.8°F | 85.8°F |
| Utila | 85.7°F | 86.1°F | 87.0°F |
| Kingston | 85.6°F | 86.2°F | 86.5°F |
| San Pedro De Macoris | 85.6°F | 85.8°F | 85.9°F |
| West End | 85.6°F | 86.0°F | 87.1°F |
| Sandy Bay | 85.6°F | 86.0°F | 87.1°F |
| La Romana | 85.6°F | 85.7°F | 85.9°F |
| Playa Blanca | 85.5°F | 86.0°F | 85.9°F |
| Ocho Rios | 85.5°F | 86.4°F | 86.5°F |
| Holguin | 85.5°F | 86.0°F | 85.8°F |
| West Bay | 85.5°F | 86.0°F | 87.1°F |
| Coxen Hole | 85.5°F | 86.0°F | 87.0°F |
| Aguadilla | 85.5°F | 86.1°F | 86.6°F |
| Bocha Chica | 85.5°F | 85.8°F | 85.9°F |
| Juan Dolio | 85.5°F | 85.8°F | 86.0°F |
| Guanaja | 85.5°F | 85.6°F | 86.9°F |
| Santo Domingo | 85.5°F | 85.9°F | 85.9°F |
| Playa Esmeralda | 85.5°F | 86.1°F | 85.9°F |
| Roatan | 85.5°F | 85.9°F | 87.0°F |
| Port Antonio | 85.3°F | 86.4°F | 86.6°F |
| Isabella | 85.3°F | 85.9°F | 86.4°F |
| Pointe-a-Pitre | 85.3°F | 85.9°F | 86.6°F |
| Arecibo | 85.3°F | 85.8°F | 86.3°F |
| Trujillo | 85.3°F | 86.3°F | 87.3°F |
| Merida | 85.1°F | 84.5°F | 85.6°F |
| San Juan | 85.1°F | 85.7°F | 86.4°F |
| Basse-Terre | 85.1°F | 85.7°F | 86.4°F |
| Arena Gorda | 85.1°F | 84.9°F | 85.5°F |
| Playa Bavaro | 85.1°F | 84.9°F | 85.6°F |
| Isla Mujeres | 85.1°F | 84.7°F | 85.7°F |
| Philipsburg | 85.0°F | 85.7°F | 86.3°F |
| Barbuda | 85.0°F | 85.4°F | 86.3°F |
| Punta Cana | 85.0°F | 85.3°F | 85.7°F |
| Cap Cana | 85.0°F | 85.3°F | 85.7°F |
| St John's | 84.9°F | 85.4°F | 86.3°F |
| Antigua | 84.9°F | 85.3°F | 86.2°F |
| Maimon Bay | 84.8°F | 85.1°F | 84.8°F |
| Puerto Plata | 84.7°F | 85.0°F | 84.7°F |
| Sosua | 84.7°F | 85.0°F | 84.8°F |
Charts below show average sea water temperature for Caribbean Sea resorts with the warmest sea in September.
You can also check other months of the year to see sea temperature of Caribbean Sea resorts at that time.
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