World Resorts USA San Francisco Weather

San Francisco sea water temperature

Current sea water temperature:
+64.8°F
Minimum sea water temperature in June: 64.8°F
Maximum sea water temperature in June: 52.9°F
Average sea water temperature in June: 58.8°F

Sea water temperature for the last 10 days:

June 25 64.8°F June 20 61.0°F
June 24 64.4°F June 19 61.0°F
June 23 63.7°F June 18 60.4°F
June 22 63.3°F June 17 60.1°F
June 21 62.6°F June 16 60.6°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:
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 14 mph
Feels like: +50°F
Precip.: 13%
Places in USA:
Name
°F
+64°F
+77°F
+86°F
+61°F
+77°F
+84°F
+72°F
+73°F
+68°F
+63°F
+54°F
+77°F
+77°F
+79°F
+66°F
24 Hours Forecast
San Francisco
Local time: 00:09
June 26, friday
0300
54°F
E
15 mph
0600
55°F
E
15 mph
0900
59°F
E
14 mph
1200
63°F
E
15 mph
1500
64°F
E
15 mph
1800
63°F
E
15 mph
2100
61°F
E
14 mph
June 27, saturday
0000
59°F
E
11 mph
Units of measurement: °C / °F