August weather in San Francisco, CA
The average temperature in San Francisco in August is °F (°F–°F). Average precipitation: 0.11 inches.
August is a summer month in San Francisco, and is cooler than the annual average of 0°F. Expect about 3 days with precipitation. Daylight averages about 13h 28m.
Avg High
°F
Avg Low
°F
Precipitation
0.11 in
Daylight
13h 28m
August records in San Francisco
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 82.0°F (2013) | 45.0°F (2013) | 0.01 in (1995) |
| August 2 | 82.0°F (2015) | 54.0°F (2012) | 0.01 in (1988) |
| August 3 | 82.0°F (2013) | 46.0°F (2013) | 0.12 in (1953) |
| August 4 | 79.0°F (2015) | 53.1°F (2013) | 0.04 in (1962) |
| August 5 | 71.1°F (2017) | 42.1°F (2014) | 0.01 in (1991) |
| August 6 | 73.9°F (2012) | 43.0°F (2014) | 0.03 in (1999) |
| August 7 | 80.1°F (2012) | 45.0°F (2012) | 0.04 in (2013) |
| August 8 | 81.0°F (2012) | 48.0°F (2012) | 0.13 in (2023) |
| August 9 | 81.0°F (2012) | 45.0°F (2012) | 0.12 in (1962) |
| August 10 | 93.0°F (2015) | 48.0°F (2012) | 0.04 in (1999) |
| August 11 | 75.0°F (2014) | 46.0°F (2013) | 0.28 in (1965) |
| August 12 | 75.0°F (2012) | 51.1°F (2012) | 0.40 in (1965) |
| August 13 | 82.0°F (2015) | 52.0°F (2015) | 0.04 in (1981) |
| August 14 | 82.0°F (2015) | 55.0°F (2014) | 0.14 in (1976) |
| August 15 | 90.0°F (2015) | 52.0°F (2013) | 0.60 in (1976) |
| August 16 | 90.0°F (2015) | 54.0°F (2015) | 0.46 in (1991) |
| August 17 | 95.0°F (2015) | 54.0°F (2014) | 0.08 in (2024) |
| August 18 | 82.9°F (2013) | 52.0°F (2013) | 0.26 in (1976) |
| August 19 | 77.0°F (2013) | 53.1°F (2013) | 0.65 in (1983) |
| August 20 | 77.0°F (2015) | 57.9°F (2013) | 0.91 in (1997) |
| August 21 | 75.0°F (2017) | 52.0°F (2016) | 0.12 in (1968) |
| August 22 | 75.9°F (2013) | 50.0°F (2013) | 0.22 in (1948) |
| August 23 | 75.9°F (2013) | 51.1°F (2013) | 0.05 in (1989) |
| August 24 | 78.1°F (2013) | 50.0°F (2013) | 0.06 in (1977) |
| August 25 | 78.1°F (2013) | 50.0°F (2013) | 0.55 in (1954) |
| August 26 | 79.0°F (2013) | 54.0°F (2015) | 0.11 in (1954) |
| August 27 | 86.0°F (2015) | 50.0°F (2013) | 0.22 in (1954) |
| August 28 | 97.0°F (2015) | 51.1°F (2015) | 0.15 in (1951) |
| August 29 | 84.0°F (2015) | 48.9°F (2016) | 0.20 in (2015) |
| August 30 | 84.0°F (2015) | 55.0°F (2014) | 0.25 in (1984) |
| August 31 | 91.0°F (2013) | 52.0°F (2014) | 0.32 in (1966) |