San Francisco Weather: August
 |
Average Day Temperature: | 67.2°F |
|
Average Night Temperature: | 57.7°F |
|
Sea Water Temperature: | 63.0°F |
|
Number of Sunny Days: | 14 days |
| Sunshine Hours: | 13.0 - 14.1 hours | |
|
Number of Rainy Days: | 0 days |
| Precipitation Totals: | 0.2 in | |
| detailed information | ||
forecast
| San Francisco |
Temperature
| San Francisco |
Air Temperature in August, °F
The highest day temperature in August 2025 was 66°F. The lowest night temperature was 55°F. The average values for day and night temperatures during August were 61.6°F и 57.0°F respectivly.
San Francisco Water Sea Temperature in August, °F
The average sea surface temperature in August 2025 for San Francisco was 65.3°F. The maximum and minimum values were 63.8°F and 66.8°F respectively.
Most of the days in August are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in August, in
Precipitation total in August for San Francisco is 0.2 in. It makes august one of the least rainy months of the year.
The average wind speed in August is 8.4 mph.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for San Francisco in August is 8.7 hours.
San Francisco on the Weather Map
| Chicago |  |
-2 |
| Hawaii | |
+78 |
| Honolulu | |
+78 |
| Houston | |
+44 |
| Las Vegas |  |
+40 |
| Los Angeles | |
+52 |
| Maui | |
+72 |
| Miami | |
+72 |
| Miami Beach |  |
+80 |
| New York | |
+18 |
| San Diego | |
+54 |
| San Francisco | |
+46 |
| Sarasota | |
+62 |
| Tampa | |
+62 |
| Washington | |
+28 |
| 0300 |  |
46°F | SW 3 mph |
| 0600 |  |
48°F | SW 4 mph |
| 0900 | |
48°F | SW 5 mph |
| 1200 | |
48°F | SW 3 mph |
| 1500 |  |
50°F | SE 2 mph |
| 1800 | |
50°F | E 4 mph |
| 2100 | |
52°F | E 3 mph |
| 0000 | |
52°F | N 2 mph |