In September warmest sea in Caribbean Sea is usually observed in the following locations: Cayo Largo, Niquero, Cayman Brac.
Table below shows the average sea water temperature for marine resorts of Caribbean Sea in September for the last three years.
| Place name | September 2025 | September 2024 | September 2023 |
|---|---|---|---|
| Cayo Largo | 88.1°F | 87.7°F | 88.1°F |
| Niquero | 87.7°F | 88.0°F | 88.1°F |
| Cayman Brac | 87.6°F | 87.3°F | 87.6°F |
| Little Cayman | 87.5°F | 87.4°F | 87.6°F |
| Grand Cayman | 87.4°F | 86.9°F | 87.0°F |
| Trinidad | 87.4°F | 87.3°F | 87.4°F |
| George Town | 87.4°F | 86.9°F | 87.0°F |
| Cienfuegos | 87.4°F | 87.3°F | 87.4°F |
| Cayo Coco | 87.4°F | 87.3°F | 87.5°F |
| Pinar del Rio | 87.3°F | 87.7°F | 87.4°F |
| Manzanillo | 87.3°F | 88.2°F | 88.1°F |
| Cayo Guillermo | 87.3°F | 87.2°F | 87.5°F |
| Westmoreland | 87.1°F | 86.9°F | 88.1°F |
| Negril | 87.1°F | 87.1°F | 87.8°F |
| Cayo Santa Maria | 87.1°F | 86.9°F | 87.2°F |
| Santa Maria | 87.1°F | 87.0°F | 87.2°F |
| La Ceiba | 87.1°F | 87.9°F | 87.0°F |
| Campeche | 87.0°F | 87.7°F | 88.3°F |
| Tela | 87.0°F | 88.2°F | 87.0°F |
| Key West | 86.9°F | 87.4°F | 87.3°F |
| Carrefour | 86.9°F | 87.5°F | 87.2°F |
| Port au Prince | 86.8°F | 87.5°F | 87.2°F |
| Chetumal | 86.8°F | 87.6°F | 87.3°F |
| Islamorada | 86.7°F | 87.3°F | 87.0°F |
| Montego Bay | 86.7°F | 86.7°F | 87.4°F |
| San Pedro | 86.7°F | 87.4°F | 87.3°F |
| Puerto Cortes | 86.7°F | 88.1°F | 86.9°F |
| Livingston | 86.6°F | 88.1°F | 86.9°F |
| Ambergis Caye | 86.6°F | 87.3°F | 87.3°F |
| Varadero | 86.6°F | 86.8°F | 86.7°F |
| Belize | 86.6°F | 87.3°F | 87.2°F |
| Key Largo | 86.6°F | 87.1°F | 86.7°F |
| Santiago de Cuba | 86.6°F | 87.0°F | 87.2°F |
| Playa Santa Lucia | 86.5°F | 86.3°F | 86.7°F |
| San Pedro Sula | 86.5°F | 88.0°F | 86.9°F |
| Providenciales | 86.5°F | 86.5°F | 86.9°F |
| Runaway Bay | 86.5°F | 86.8°F | 87.6°F |
| Cap Haitien | 86.4°F | 86.7°F | 87.1°F |
| Puerto Barrios | 86.4°F | 87.8°F | 86.9°F |
| Placencia | 86.4°F | 88.0°F | 87.1°F |
| Ocho Rios | 86.4°F | 86.5°F | 87.5°F |
| Port Antonio | 86.4°F | 86.6°F | 87.3°F |
| Trujillo | 86.3°F | 87.3°F | 86.9°F |
| Ponce | 86.3°F | 87.0°F | 86.7°F |
| Punta Gorda | 86.3°F | 87.7°F | 86.5°F |
| Kingston | 86.2°F | 86.5°F | 87.4°F |
| Los Cayitos | 86.2°F | 87.1°F | 86.6°F |
| Aguadilla | 86.1°F | 86.6°F | 86.3°F |
| Mayaguez | 86.1°F | 86.8°F | 86.5°F |
| Havana | 86.1°F | 86.2°F | 86.4°F |
| Utila | 86.1°F | 87.0°F | 86.6°F |
| Playa Esmeralda | 86.1°F | 85.9°F | 86.3°F |
| Eleuthera | 86.0°F | 86.0°F | 86.1°F |
| Playa Blanca | 86.0°F | 85.9°F | 86.4°F |
| West Bay | 86.0°F | 87.1°F | 86.6°F |
| Holguin | 86.0°F | 85.8°F | 86.4°F |
| New Providence | 86.0°F | 86.1°F | 86.3°F |
| West End | 86.0°F | 87.1°F | 86.6°F |
| Sandy Bay | 86.0°F | 87.1°F | 86.6°F |
| Coxen Hole | 86.0°F | 87.0°F | 86.6°F |
| Nassau | 86.0°F | 86.1°F | 86.3°F |
| Mahahual | 86.0°F | 86.7°F | 86.4°F |
| Andros | 86.0°F | 86.0°F | 86.4°F |
| Samana | 85.9°F | 86.1°F | 86.5°F |
| Santo Domingo | 85.9°F | 85.9°F | 86.4°F |
| Roatan | 85.9°F | 87.0°F | 86.6°F |
| Pointe-a-Pitre | 85.9°F | 86.6°F | 86.9°F |
| Isabella | 85.9°F | 86.4°F | 85.8°F |
| Cozumel | 85.9°F | 86.5°F | 86.3°F |
| San Pedro De Macoris | 85.8°F | 85.9°F | 86.4°F |
| Juan Dolio | 85.8°F | 86.0°F | 86.4°F |
| Matanzas | 85.8°F | 85.7°F | 85.8°F |
| Bocha Chica | 85.8°F | 85.9°F | 86.5°F |
| Baracoa | 85.8°F | 85.8°F | 86.5°F |
| Arecibo | 85.8°F | 86.3°F | 86.4°F |
| Playa del Carmen | 85.8°F | 86.5°F | 86.1°F |
| Puerto Aventuras | 85.7°F | 86.4°F | 86.0°F |
| San Juan | 85.7°F | 86.4°F | 86.2°F |
| Riviera Maya | 85.7°F | 86.4°F | 86.0°F |
| Basse-Terre | 85.7°F | 86.4°F | 86.7°F |
| Philipsburg | 85.7°F | 86.3°F | 86.2°F |
| La Romana | 85.7°F | 85.9°F | 86.4°F |
| Grand Turk | 85.7°F | 85.9°F | 86.2°F |
| Cockburn | 85.7°F | 85.9°F | 86.2°F |
| Salt Cay | 85.6°F | 85.9°F | 86.2°F |
| Guanaja | 85.6°F | 86.9°F | 86.6°F |
| Tulum | 85.6°F | 86.4°F | 85.9°F |
| Puerto Morelos | 85.6°F | 86.4°F | 86.1°F |
| Barbuda | 85.4°F | 86.3°F | 86.4°F |
| St John's | 85.4°F | 86.3°F | 86.4°F |
| Antigua | 85.3°F | 86.2°F | 86.4°F |
| Punta Cana | 85.3°F | 85.7°F | 85.6°F |
| Cap Cana | 85.3°F | 85.7°F | 85.6°F |
| Maimon Bay | 85.1°F | 84.8°F | 85.8°F |
| Sosua | 85.0°F | 84.8°F | 85.7°F |
| Puerto Plata | 85.0°F | 84.7°F | 85.7°F |
| Cancun | 85.0°F | 86.0°F | 85.2°F |
| Playa Bavaro | 84.9°F | 85.6°F | 85.6°F |
| Arena Gorda | 84.9°F | 85.5°F | 85.6°F |
| Isla Mujeres | 84.7°F | 85.7°F | 84.8°F |
| Merida | 84.5°F | 85.6°F | 87.3°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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