São Francisco Weather in August
Average highs run from 31°C on August 1 to 34°C on August 31, and lows from 16°C to 19°C. Normal precipitation for the month is 3 mm over about 0 wet days.
August day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
August at a glance
- Average high
- 32°C
- Average low
- 17°C
- Precipitation
- 3 mm
- Reanalysis high
- 38°CAug 28, 2000
- Reanalysis low
- 11°CAug 17, 1991
- Daylight
- 11 h 25 min to 11 h 48 min
- Cloud cover
- 23%
- Humidity
- 44%
- Dew point
- 10°C
- Wind
- 14.8 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Aug 1 | 31°C | 16°C | 34°C 2018 | 13°C 1997 | 0% |
| Aug 2 | 31°C | 17°C | 34°C 2011 | 13°C 1997 | 0% |
| Aug 3 | 32°C | 17°C | 35°C 2011 | 13°C 1997 | 0% |
| Aug 4 | 32°C | 17°C | 35°C 2008 | 14°C 1997 | 0% |
| Aug 5 | 32°C | 17°C | 36°C 2018 | 14°C 2004 | 0% |
| Aug 6 | 32°C | 17°C | 36°C 2018 | 14°C 2004 | 0% |
| Aug 7 | 32°C | 17°C | 36°C 2018 | 12°C 1994 | 1% |
| Aug 8 | 32°C | 17°C | 34°C 1996 | 12°C 1994 | 1% |
| Aug 9 | 32°C | 17°C | 35°C 1996 | 14°C 1994 | 2% |
| Aug 10 | 32°C | 17°C | 36°C 2017 | 13°C 1994 | 2% |
| Aug 11 | 32°C | 17°C | 36°C 1996 | 13°C 1997 | 2% |
| Aug 12 | 32°C | 17°C | 36°C 1998 | 12°C 1997 | 2% |
| Aug 13 | 32°C | 17°C | 36°C 1998 | 12°C 1997 | 2% |
| Aug 14 | 32°C | 17°C | 35°C 1999 | 13°C 2004 | 2% |
| Aug 15 | 32°C | 17°C | 36°C 2016 | 13°C 2004 | 2% |
| Aug 16 | 32°C | 17°C | 35°C 1995 | 13°C 1991 | 2% |
| Aug 17 | 32°C | 17°C | 36°C 2016 | 11°C 1991 | 3% |
| Aug 18 | 32°C | 17°C | 36°C 2016 | 13°C 1991 | 3% |
| Aug 19 | 32°C | 17°C | 36°C 2016 | 12°C 2010 | 3% |
| Aug 20 | 32°C | 17°C | 36°C 2009 | 13°C 2010 | 4% |
| Aug 21 | 32°C | 18°C | 37°C 2016 | 14°C 2010 | 4% |
| Aug 22 | 33°C | 18°C | 35°C 2019 | 13°C 1997 | 4% |
| Aug 23 | 33°C | 18°C | 36°C 2015 | 14°C 1999 | 4% |
| Aug 24 | 33°C | 18°C | 36°C 2015 | 14°C 1999 | 3% |
| Aug 25 | 33°C | 18°C | 36°C 2004 | 14°C 2007 | 3% |
| Aug 26 | 33°C | 18°C | 36°C 2000 | 14°C 2020 | 3% |
| Aug 27 | 33°C | 18°C | 37°C 2000 | 14°C 2020 | 3% |
| Aug 28 | 33°C | 18°C | 38°C 2000 | 16°C 1995 | 4% |
| Aug 29 | 33°C | 19°C | 37°C 2014 | 17°C 1997 | 4% |
| Aug 30 | 34°C | 19°C | 36°C 2014 | 16°C 1997 | 4% |
| Aug 31 | 34°C | 19°C | 37°C 2005 | 15°C 1997 | 5% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-3).
- August 1
- sunrise 6:23 AM, sunset 5:48 PM
- August 31
- sunrise 6:06 AM, sunset 5:54 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.