Average sea water temperature in December:
+39.4°F
| Minimum sea water temperature in December: | 43.9°F |
| Maximum sea water temperature in December: | 36.3°F |
Daily sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 38.3°F. The highest and lowest sea temperatures during the month were 40.3°F and 36.3°F.
sea water
temperature
temperature
| Grand Marais |
monthly
weather
weather
| Grand Marais |
current
weather
weather
| Grand Marais |
14 days
forecast
forecast
| Grand Marais |
Monthly sea water temperature in Grand Marais, °F
Which USA resorts have warmest sea in December?
| Place name | December 2025 | December 2024 |
|---|---|---|
| Kailua Kona | 79.2°F | 78.3°F |
| West Palm Beach | 79.0°F | 78.4°F |
| Fort Lauderdale | 78.7°F | 77.6°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 Largo | 76.3°F | 73.1°F |
| Key West | 75.9°F | 72.6°F |
| Miami | 75.5°F | 73.0°F |
| Everglades | 73.7°F | 69.7°F |
| South Padre Island | 71.8°F | 71.9°F |
| Naples | 71.5°F | 67.7°F |
| Sanibel Island | 70.9°F | 67.1°F |
| Cocoa Beach | 69.7°F | 66.6°F |
| Siesta Key | 69.3°F | 65.6°F |
| Sarasota | 69.2°F | 65.6°F |
| Tampa | 68.3°F | 65.5°F |
Best time for vacation in Grand Marais
Grand Marais on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Grand Marais
Local time: 15:40
February 26, thursday
1800
28°F
SE
7 mph
7 mph
2100
27°F
SE
5 mph
5 mph
February 27, friday
0000
23°F
SE
5 mph
5 mph
0300
25°F
SE
2 mph
2 mph
0600
27°F
NE
6 mph
6 mph
0900
28°F
NE
11 mph
11 mph
1200
37°F
NE
14 mph
14 mph
1500
37°F
E
22 mph
22 mph
