Average sea water temperature in December:
+39.6°F
| Minimum sea water temperature in December: | 45.3°F |
| Maximum sea water temperature in December: | 35.4°F |
Daily sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 38.0°F. The highest and lowest sea temperatures during the month were 42.4°F and 35.4°F.
sea water
temperature
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| Mackinac Island |
monthly
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| Mackinac Island |
current
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| Mackinac Island |
14 days
forecast
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| Mackinac Island |
Monthly sea water temperature in Mackinac Island, °F
Which USA resorts have warmest sea in December?
| Place name | December 2025 | December 2024 |
|---|---|---|
| West Palm Beach | 79.0°F | 78.4°F |
| Honolulu | 78.6°F | 78.3°F |
| Hawaii | 78.5°F | 78.3°F |
| Kauai | 78.2°F | 76.0°F |
| Maui | 78.0°F | 77.8°F |
| Miami Beach | 77.4°F | 75.9°F |
| Oahu | 77.1°F | 77.2°F |
| Key West | 75.9°F | 72.6°F |
| Miami | 75.5°F | 73.0°F |
| Naples | 71.5°F | 67.7°F |
| Cocoa Beach | 69.7°F | 66.6°F |
| Sarasota | 69.2°F | 65.6°F |
| Tampa | 68.3°F | 65.5°F |
| Orlando | 67.6°F | 66.0°F |
| Daytona Beach | 67.1°F | 65.8°F |
| Clearwater Beach | 66.8°F | 62.9°F |
| Fort Walton Beach | 66.0°F | 67.1°F |
| Destin | 65.7°F | 66.5°F |
| Pensacola Beach | 65.2°F | 66.7°F |
| Santa Rosa Beach | 65.0°F | 66.0°F |
Best time for vacation in Mackinac Island
Mackinac Island on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Mackinac Island
Local time: 03:50
August 14, friday
0600
63°F
S
6 mph
6 mph
0900
64°F
S
4 mph
4 mph
1200
70°F
SW
5 mph
5 mph
1500
73°F
W
3 mph
3 mph
1800
73°F
SW
3 mph
3 mph
2100
70°F
SW
7 mph
7 mph
August 15, saturday
0000
64°F
S
8 mph
8 mph
0300
63°F
W
4 mph
4 mph
