The Martinique resorts with the warmest sea water temperature in September are Fort-de-France Bay, Les Trois-Ilets and Sainte-Luce.
Below you can see a list of all popular Martinique resorts and information about sea water temperature in September for the last two years.
| Resort Name | September 2026 | September 2025 | September 2024 |
|---|---|---|---|
| Fort-de-France Bay | 89.0°F | 89.5°F | 90.3°F |
| Les Trois-Ilets | 89.0°F | 89.5°F | 90.3°F |
| Sainte-Luce | 88.9°F | 89.5°F | 90.4°F |
Please see following sea water temperature averages charts for the warmest Martinique resorts in September.
You can also get the same information for the every other month of the year when the average sea water temperature is greater then 70°F.
Sea Water
Temperature
Temperature
| Fort-de-France Bay |
Sea Water
Temperature
Temperature
| Les Trois-Ilets |
Sea Water
Temperature
Temperature
| Sainte-Luce |
