Average sea water temperature in December:
+54.1°F
| Minimum sea water temperature in December: | 59.2°F |
| Maximum sea water temperature in December: | 50.2°F |
Daily sea water temperature in December, °F
Show year:
2025
2024
2023
The average sea water temperature in December of 2025 was 55.0°F. The highest and lowest sea temperatures during the month were 57.0°F and 53.2°F.
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| San Francisco |
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Monthly sea water temperature in San Francisco, °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 | 78.7°F | 78.3°F |
| Kauai | 78.6°F | 76.0°F |
| Maui | 78.2°F | 77.8°F |
| Miami Beach | 78.0°F | 75.9°F |
| Oahu | 77.4°F | 77.2°F |
| Islamorada | 77.2°F | 73.4°F |
| Key Largo | 77.2°F | 73.1°F |
| Key West | 76.7°F | 72.6°F |
| Miami | 76.3°F | 73.0°F |
| Everglades | 74.6°F | 69.7°F |
| Naples | 72.0°F | 67.7°F |
| South Padre Island | 71.9°F | 71.9°F |
| Cape Coral | 71.8°F | 67.8°F |
| Sanibel Island | 71.5°F | 67.1°F |
| Siesta Key | 70.0°F | 65.6°F |
| Sarasota | 69.8°F | 65.6°F |
| Cocoa Beach | 69.7°F | 66.6°F |
Best time for vacation in San Francisco
San Francisco on a weather map
Places in USA:
Name
°F
24 Hours Forecast
San Francisco
Local time: 01:34
December 18, thursday
0300
48°F
E
4 mph
4 mph
0600
50°F
E
2 mph
2 mph
0900
52°F
N
2 mph
2 mph
1200
52°F
E
1 mph
1 mph
1500
54°F
E
3 mph
3 mph
1800
54°F
E
3 mph
3 mph
2100
55°F
E
4 mph
4 mph
December 19, friday
0000
55°F
NE
3 mph
3 mph
