Average sea water temperature in December:
+70.8°F
| Minimum sea water temperature in December: | 77.4°F |
| Maximum sea water temperature in December: | 64.9°F |
Daily sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 72.2°F. The highest and lowest sea temperatures during the month were 74.7°F and 69.4°F.
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| Marco Island |
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| Marco Island |
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| Marco Island |
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| Marco Island |
Monthly sea water temperature in Marco Island, °F
Which USA resorts have warmest sea in December?
| Place name | December 2025 | December 2024 |
|---|---|---|
| Kailua Kona | 79.4°F | 78.3°F |
| Fort Lauderdale | 79.1°F | 77.6°F |
| Honolulu | 78.8°F | 78.3°F |
| Hawaii | 78.6°F | 78.3°F |
| Kauai | 78.5°F | 76.0°F |
| Maui | 78.2°F | 77.8°F |
| Miami Beach | 77.9°F | 75.9°F |
| Oahu | 77.4°F | 77.2°F |
| Islamorada | 77.1°F | 73.4°F |
| Key Largo | 77.0°F | 73.1°F |
| Key West | 76.6°F | 72.6°F |
| Miami | 76.2°F | 73.0°F |
| Everglades | 74.2°F | 69.7°F |
| Naples | 71.8°F | 67.7°F |
| South Padre Island | 71.6°F | 71.9°F |
| Cape Coral | 71.6°F | 67.8°F |
| Sanibel Island | 71.3°F | 67.1°F |
| Siesta Key | 69.8°F | 65.6°F |
| Sarasota | 69.6°F | 65.6°F |
| Cocoa Beach | 69.5°F | 66.6°F |
Best time for vacation in Marco Island
Marco Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Marco Island
Local time: 23:15
December 21, sunday
0000
64°F
SW
6 mph
6 mph
0300
63°F
SW
7 mph
7 mph
0600
61°F
SW
7 mph
7 mph
0900
66°F
SW
7 mph
7 mph
1200
70°F
SW
3 mph
3 mph
1500
72°F
E
7 mph
7 mph
1800
70°F
SE
11 mph
11 mph
2100
72°F
S
11 mph
11 mph
