World Resorts USA San Francisco Weather

San Francisco Sea Temperature in December

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 54.8°F. The highest and lowest sea temperatures during the month were 57.0°F and 53.2°F.

Monthly sea water temperature in San Francisco, °F

Which USA resorts have warmest sea in December?

Place name December 2025 December 2024
Kailua Kona 79.2°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 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
Cape Coral 71.2°F 67.8°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
Orlando 67.6°F 66.0°F

Best time for vacation in San Francisco

Sunniest months:
June 18 days
October 18 days
April 17 days
Warmest months:
August 65.5 °F
September 65.0 °F
October 64.2 °F
Warmest sea temp:
September 62.0 °F
August 61.7 °F
October 60.7 °F
Coldest months:
December 54.3 °F
January 54.7 °F
February 55.7 °F
Rainiest months:
March 4 days
December 4 days
January 4 days
Windiest months:
May 9.9 mph
June 9.7 mph
April 9.4 mph

San Francisco on a weather map

San Francisco
+63°F
SW 4 mph
Feels like: +63°F
Precip.: 0%
Places in USA:
Name
°F
+34°F
+72°F
+72°F
+59°F
+59°F
+68°F
+70°F
+68°F
+32°F
+57°F
+63°F
+48°F
+45°F
+37°F
+18°F
24 Hours Forecast
San Francisco
Local time: 05:16
March 17, tuesday
0600
63°F
SW
4 mph
0900
66°F
SW
6 mph
1200
77°F
S
6 mph
1500
64°F
SE
9 mph
1800
57°F
SE
8 mph
2100
55°F
E
4 mph
March 18, wednesday
0000
54°F
E
1 mph
0300
50°F
SE
1 mph
Units of measurement: °C / °F