August weather in San Diego, CA
The average temperature in San Diego in August is 73.7°F (65.3°F–82.0°F). Average precipitation: 0.01 inches.
August is a summer month in San Diego, and is warmer than the annual average of 64.1°F. Daily temperatures swing about 16.7°F between overnight low and afternoon high. Expect about 0 days with precipitation. Daylight averages about 13h 13m. For travel, August is a comfortable month to visit.
Avg High
82.0°F
Avg Low
65.3°F
Precipitation
0.01 in
Daylight
13h 13m
August records in San Diego
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 93.0°F (2000) | 59.0°F (2010) | 0.01 in (2024) |
| August 2 | 91.0°F (2021) | 60.1°F (1999) | 0.07 in (2014) |
| August 3 | 89.1°F (2009) | 59.0°F (1999) | 0.02 in (2006) |
| August 4 | 91.0°F (2009) | 59.0°F (2011) | 0.00 in (1998) |
| August 5 | 91.9°F (2009) | 61.0°F (1999) | 0.00 in (1998) |
| August 6 | 89.1°F (2018) | 61.0°F (1999) | 0.00 in (1998) |
| August 7 | 93.0°F (2018) | 61.0°F (2010) | 0.00 in (1998) |
| August 8 | 93.0°F (2018) | 59.0°F (2002) | 0.01 in (2022) |
| August 9 | 96.1°F (1998) | 57.0°F (2010) | 0.00 in (1998) |
| August 10 | 93.0°F (2003) | 60.1°F (2011) | 0.01 in (1998) |
| August 11 | 91.9°F (2000) | 60.1°F (2013) | 0.00 in (1998) |
| August 12 | 93.9°F (2012) | 60.1°F (1999) | 0.00 in (1998) |
| August 13 | 93.9°F (2020) | 60.1°F (1999) | 0.00 in (1998) |
| August 14 | 97.0°F (2020) | 59.0°F (2010) | 0.00 in (1998) |
| August 15 | 97.0°F (2015) | 57.0°F (2010) | 0.03 in (2021) |
| August 16 | 96.1°F (2015) | 59.0°F (2010) | 0.00 in (1998) |
| August 17 | 93.0°F (2012) | 61.0°F (2011) | 0.00 in (1998) |
| August 18 | 99.0°F (2020) | 61.0°F (2011) | 0.00 in (1998) |
| August 19 | 90.0°F (2010) | 60.1°F (2011) | 0.00 in (1998) |
| August 20 | 93.0°F (2024) | 60.1°F (1999) | 2.15 in (2023) |
| August 21 | 91.9°F (2020) | 60.1°F (1999) | 0.00 in (1998) |
| August 22 | 90.0°F (2020) | 62.1°F (2001) | 0.02 in (2012) |
| August 23 | 91.9°F (2010) | 61.0°F (1999) | 0.00 in (1998) |
| August 24 | 90.0°F (2010) | 60.1°F (2002) | 0.00 in (1998) |
| August 25 | 93.9°F (2009) | 59.0°F (2002) | 0.01 in (2015) |
| August 26 | 98.1°F (2009) | 61.0°F (2002) | 0.00 in (1998) |
| August 27 | 102.9°F (2009) | 57.9°F (2010) | 0.00 in (1998) |
| August 28 | 100.9°F (2009) | 55.9°F (2010) | 0.05 in (2025) |
| August 29 | 105.1°F (2009) | 60.1°F (2010) | 0.01 in (2000) |
| August 30 | 98.1°F (1998) | 57.9°F (2010) | 0.00 in (1998) |
| August 31 | 96.1°F (1998) | 55.0°F (2010) | 0.00 in (1998) |