San Francisco Weather in August
Average highs run from 66°F on August 1 to 69°F on August 31, and lows from 55°F to 56°F. Normal precipitation for the month is 0.06 in over about 1 wet days.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 68°F
- Average low
- 56°F
- Precipitation
- 0.06 in
- Record high
- 99°FAug 24, 2010
- Record low
- 48°FAug 22, 1955
- Chance of a freeze
- 0%
- Daylight
- 14 h 05 min to 13 h 01 min
- Cloud cover
- 26%
- Humidity
- 73%
- Dew point
- 53°F
- Wind
- 7.8 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Aug 1 | 66°F | 55°F | 88°F 2000 | 52°F 1955 | 3% |
| Aug 2 | 67°F | 55°F | 85°F 1955 | 52°F 1956 | 3% |
| Aug 3 | 67°F | 55°F | 80°F 1955 | 49°F 1954 | 3% |
| Aug 4 | 67°F | 55°F | 79°F 1958 | 51°F 2022 | 3% |
| Aug 5 | 67°F | 55°F | 85°F 1961 | 51°F 1950 | 3% |
| Aug 6 | 67°F | 55°F | 88°F 1961 | 49°F 1950 | 3% |
| Aug 7 | 67°F | 55°F | 88°F 1984 | 51°F 2002 | 3% |
| Aug 8 | 67°F | 55°F | 88°F 2002 | 51°F 2011 | 3% |
| Aug 9 | 67°F | 55°F | 93°F 2002 | 49°F 2011 | 3% |
| Aug 10 | 67°F | 55°F | 86°F 2002 | 49°F 2011 | 3% |
| Aug 11 | 67°F | 56°F | 82°F 1959 | 51°F 2005 | 3% |
| Aug 12 | 67°F | 56°F | 88°F 1957 | 50°F 1951 | 3% |
| Aug 13 | 68°F | 56°F | 90°F 2020 | 49°F 2007 | 3% |
| Aug 14 | 68°F | 56°F | 94°F 2019 | 50°F 2000 | 3% |
| Aug 15 | 68°F | 56°F | 96°F 2020 | 49°F 2000 | 3% |
| Aug 16 | 68°F | 56°F | 93°F 2015 | 50°F 1952 | 3% |
| Aug 17 | 68°F | 56°F | 88°F 1950 | 49°F 1952 | 3% |
| Aug 18 | 68°F | 56°F | 87°F 1961 | 49°F 2011 | 3% |
| Aug 19 | 68°F | 56°F | 90°F 1950 | 51°F 1955 | 3% |
| Aug 20 | 68°F | 56°F | 86°F 2023 | 50°F 1955 | 3% |
| Aug 21 | 69°F | 56°F | 83°F 1974 | 51°F 2000 | 3% |
| Aug 22 | 69°F | 56°F | 89°F 1959 | 48°F 1955 | 3% |
| Aug 23 | 69°F | 56°F | 95°F 2010 | 51°F 1955 | 3% |
| Aug 24 | 69°F | 56°F | 99°F 2010 | 51°F 1948 | 3% |
| Aug 25 | 69°F | 56°F | 88°F 2010 | 52°F 1953 | 3% |
| Aug 26 | 69°F | 56°F | 87°F 2024 | 49°F 1952 | 3% |
| Aug 27 | 69°F | 56°F | 95°F 1962 | 51°F 2005 | 3% |
| Aug 28 | 69°F | 56°F | 94°F 2009 | 52°F 1955 | 3% |
| Aug 29 | 69°F | 56°F | 90°F 1977 | 50°F 2012 | 3% |
| Aug 30 | 69°F | 56°F | 91°F 2023 | 48°F 1952 | 3% |
| Aug 31 | 69°F | 56°F | 92°F 1952 | 50°F 1955 | 3% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (PDT).
- August 1
- sunrise 6:13 AM, sunset 8:18 PM
- August 31
- sunrise 6:39 AM, sunset 7:40 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00023272 (San Francisco Dwtn), public domain. Records: NOAA GHCN-Daily, station USW00023230, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.