October weather in San Diego, CA
The average temperature in San Diego in October is 67.8°F (57.8°F–77.8°F). Average precipitation: 0.54 inches.
October is a fall month in San Diego, and is warmer than the annual average of 64.1°F. Daily temperatures swing about 20°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 11h 10m. For travel, October is one of the best months of the year to visit.
Avg High
77.8°F
Avg Low
57.8°F
Precipitation
0.54 in
Daylight
11h 10m
October records in San Diego
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 100.0°F (2020) | 54.0°F (2002) | 0.09 in (2002) |
| October 2 | 99.0°F (2020) | 51.1°F (2002) | 0.00 in (1998) |
| October 3 | 96.1°F (2014) | 51.1°F (2002) | 0.01 in (2009) |
| October 4 | 96.1°F (2020) | 52.0°F (2002) | 0.47 in (2021) |
| October 5 | 96.1°F (2020) | 50.0°F (2009) | 0.61 in (2011) |
| October 6 | 93.9°F (2005) | 51.1°F (2007) | 0.30 in (2010) |
| October 7 | 97.0°F (2017) | 50.0°F (2007) | 0.00 in (1998) |
| October 8 | 97.0°F (2008) | 51.1°F (2011) | 0.17 in (2021) |
| October 9 | 100.9°F (2015) | 50.0°F (1998) | 0.30 in (2013) |
| October 10 | 99.0°F (2015) | 52.0°F (2013) | 0.05 in (2000) |
| October 11 | 98.1°F (2015) | 50.0°F (2013) | 0.15 in (2012) |
| October 12 | 97.0°F (2011) | 46.9°F (2008) | 0.42 in (2018) |
| October 13 | 99.0°F (2020) | 46.9°F (2008) | 0.18 in (2007) |
| October 14 | 93.9°F (2005) | 50.0°F (2013) | 0.89 in (2006) |
| October 15 | 100.0°F (2017) | 52.0°F (2000) | 0.05 in (2022) |
| October 16 | 100.0°F (2017) | 50.0°F (2025) | 0.04 in (2003) |
| October 17 | 98.1°F (2012) | 50.0°F (1998) | 0.29 in (2005) |
| October 18 | 93.0°F (2022) | 48.0°F (1998) | 0.35 in (2004) |
| October 19 | 95.0°F (2022) | 48.0°F (2021) | 1.06 in (2010) |
| October 20 | 93.9°F (1999) | 50.0°F (2013) | 0.97 in (2004) |
| October 21 | 95.0°F (2003) | 51.1°F (2013) | 0.22 in (2012) |
| October 22 | 97.0°F (2019) | 52.0°F (2004) | 0.03 in (2022) |
| October 23 | 102.0°F (2017) | 51.1°F (2004) | 0.05 in (2022) |
| October 24 | 105.1°F (2017) | 50.0°F (2022) | 0.13 in (2016) |
| October 25 | 104.0°F (2017) | 51.1°F (2012) | 0.23 in (2021) |
| October 26 | 93.9°F (2017) | 50.0°F (2012) | 0.17 in (2000) |
| October 27 | 91.0°F (2008) | 46.9°F (2020) | 2.71 in (2004) |
| October 28 | 90.0°F (2008) | 46.9°F (2011) | 0.12 in (2004) |
| October 29 | 91.0°F (2025) | 43.0°F (2009) | 0.63 in (2000) |
| October 30 | 88.0°F (1999) | 46.9°F (2009) | 0.16 in (2010) |
| October 31 | 89.1°F (2015) | 44.1°F (2019) | 0.01 in (2010) |