Current sea water temperature:
+66.4°F
| Minimum sea water temperature in August: | 67.5°F |
| Maximum sea water temperature in August: | 55.8°F |
| Average sea water temperature in August: | 61.8°F |
| more information | |
14 days
forecast
forecast
| San Francisco |
monthly
weather
weather
| San Francisco |
Sea water temperature for the last 10 days:
| August 25 | 66.4°F | August 20 | 64.0°F |
| August 24 | 66.6°F | August 19 | 64.6°F |
| August 23 | 64.9°F | August 18 | 63.3°F |
| August 22 | 63.9°F | August 17 | 62.1°F |
| August 21 | 66.7°F | August 16 | 62.8°F |
Monthly sea water temperature, °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:
2026
2025
2024
The average sea water temperature in August of 2026 was 64.4°F. The highest and lowest sea temperatures during the month were 66.7°F and 62.1°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.
current
weather
weather
| San Francisco |
weather in
August
August
| San Francisco |
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: 12:33
August 25, tuesday
1500
63°F
E
11 mph
11 mph
1800
64°F
E
11 mph
11 mph
2100
63°F
E
8 mph
8 mph
August 26, wednesday
0000
59°F
NE
7 mph
7 mph
0300
59°F
E
6 mph
6 mph
0600
61°F
NE
3 mph
3 mph
0900
61°F
NE
6 mph
6 mph
1200
63°F
E
7 mph
7 mph
