World Resorts USA San Francisco Weather

San Francisco Sea Temperature in September

Average sea water temperature in September:
+62.0°F
Minimum sea water temperature in September: 66.9°F
Maximum sea water temperature in September: 55.8°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 64.8°F. The highest and lowest sea temperatures during the month were 66.9°F and 62.2°F.

Monthly sea water temperature in San Francisco, °F

Which USA resorts have warmest sea in September?

Place name September 2025 September 2024
Key West 86.9°F 87.4°F
Fort Lauderdale 86.4°F 86.4°F
West Palm Beach 86.2°F 86.4°F
Miami Beach 86.1°F 86.3°F
Naples 86.1°F 87.2°F
Corpus Christi 85.8°F 84.7°F
Miami 85.8°F 86.0°F
Houston 84.9°F 83.4°F
Siesta Key 84.9°F 86.8°F
Sarasota 84.8°F 86.7°F
Cocoa Beach 84.6°F 85.2°F
Tampa 84.3°F 86.0°F
New Orleans 84.3°F 82.9°F
St. Petersburg 84.1°F 86.1°F
Clearwater Beach 84.0°F 86.2°F
Panama City Beach 83.4°F 84.8°F
Destin 83.1°F 84.5°F
Orlando 82.8°F 83.6°F
Daytona Beach 82.7°F 83.2°F
St. Augustine 81.8°F 82.7°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
+54°F
E 16 mph
Feels like: +50°F
Precip.: 13%
Places in USA:
Name
°F
+64°F
+77°F
+86°F
+61°F
+79°F
+84°F
+72°F
+73°F
+70°F
+63°F
+54°F
+77°F
+77°F
+79°F
+66°F
24 Hours Forecast
San Francisco
Local time: 01:13
June 26, friday
0300
54°F
E
16 mph
0600
54°F
E
16 mph
0900
59°F
E
15 mph
1200
63°F
E
14 mph
1500
63°F
E
14 mph
1800
61°F
E
15 mph
2100
59°F
E
12 mph
June 27, saturday
0000
59°F
E
11 mph
Units of measurement: °C / °F