World Resorts USA San Francisco Weather

San Francisco sea water temperature

Current sea water temperature:
+55.9°F
Minimum sea water temperature in February: 58.6°F
Maximum sea water temperature in February: 49.6°F
Average sea water temperature in February: 53.4°F

Sea water temperature for the last 10 days:

February 4 55.9°F January 30 55.2°F
February 3 54.7°F January 29 54.5°F
February 2 54.3°F January 28 53.8°F
February 1 54.9°F January 27 54.1°F
January 31 54.9°F January 26 54.1°F

When is the warmest sea in San Francisco?

Based on the data about daily sea water temperature for the last three years the warmest sea in San Francisco was noticed in September, August and October.

Monthly Sea Temperatures in San Francisco, °F

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.

Sea water temperature in August, °F

Show year:
2025
2024
2023

The average sea water temperature in August of 2025 was 63.8°F. The highest and lowest sea temperatures during the month were 65.1°F and 62.4°F.

Sea water temperature in October, °F

Show year:
2025
2024
2023

The average sea water temperature in October of 2025 was 63.8°F. The highest and lowest sea temperatures during the month were 65.3°F and 62.4°F.

Best time for vacation in San Francisco

Sunniest months:
October 18 days
June 18 days
May 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 55.5 °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
+66°F
SW 6 mph
Feels like: +66°F
Precip.: 0%
Places in USA:
Name
°F
+21°F
+75°F
+75°F
+73°F
+82°F
+63°F
+68°F
+72°F
+16°F
+77°F
+66°F
+57°F
+57°F
+52°F
+21°F
24 Hours Forecast
San Francisco
Local time: 17:33
February 04, wednesday
1800
66°F
SW
6 mph
2100
55°F
SW
6 mph
February 05, thursday
0000
52°F
SW
6 mph
0300
52°F
SW
6 mph
0600
50°F
SW
9 mph
0900
48°F
SW
8 mph
1200
54°F
S
6 mph
1500
63°F
SW
4 mph
Units of measurement: °C / °F