In December warmest sea in Florida is usually observed in the following locations: Port St. Lucie, Cocoa Beach, Siesta Key.
Table below shows the average sea water temperature for marine resorts of Florida in December for the last three years.
| Place name | December 2025 | December 2024 | December 2023 |
|---|---|---|---|
| Port St. Lucie | 73.8°F | 71.9°F | 75.0°F |
| Cocoa Beach | 69.5°F | 66.6°F | 68.1°F |
| Siesta Key | 69.4°F | 65.6°F | 66.9°F |
| Sarasota | 69.3°F | 65.6°F | 66.8°F |
| Tampa | 68.1°F | 65.5°F | 66.2°F |
| Orlando | 67.7°F | 66.0°F | 66.4°F |
| St. Petersburg | 67.5°F | 64.3°F | 65.4°F |
| Daytona Beach | 67.3°F | 65.8°F | 65.5°F |
| Clearwater Beach | 66.6°F | 62.9°F | 64.4°F |
| Kissimmee | 32.0°F | 32.0°F | 32.0°F |
Charts below show average sea water temperature for Florida resorts with the warmest sea in December.
You can also check other months of the year to see sea temperature of Florida resorts at that time.
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