May weather in San Diego, CA
The average temperature in San Diego in May is 64.4°F (56.6°F–72.1°F). Average precipitation: 0.28 inches.
May is a spring month in San Diego, and is warmer than the annual average of 64.1°F. Daily temperatures swing about 15.5°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 13h 41m. For travel, May is one of the best months of the year to visit.
Avg High
72.1°F
Avg Low
56.6°F
Precipitation
0.28 in
Daylight
13h 41m
May records in San Diego
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 93.9°F (2014) | 44.1°F (1999) | 0.01 in (2018) |
| May 2 | 98.1°F (2004) | 48.0°F (2002) | 0.06 in (2021) |
| May 3 | 102.0°F (2004) | 48.9°F (2018) | 0.43 in (2003) |
| May 4 | 87.1°F (2004) | 50.0°F (1999) | 0.06 in (1998) |
| May 5 | 87.1°F (2020) | 46.9°F (1999) | 0.25 in (2005) |
| May 6 | 91.0°F (2004) | 46.9°F (2023) | 0.35 in (2016) |
| May 7 | 91.0°F (2007) | 48.0°F (2017) | 0.48 in (2017) |
| May 8 | 93.0°F (2007) | 48.9°F (2017) | 0.62 in (2015) |
| May 9 | 86.0°F (2007) | 51.1°F (2003) | 0.04 in (2019) |
| May 10 | 91.9°F (2025) | 45.0°F (2003) | 0.04 in (2019) |
| May 11 | 82.9°F (2013) | 48.9°F (2003) | 0.12 in (2019) |
| May 12 | 90.0°F (2013) | 48.0°F (2010) | 0.49 in (1998) |
| May 13 | 97.0°F (2013) | 48.9°F (1998) | 0.10 in (1998) |
| May 14 | 95.0°F (2014) | 48.9°F (1998) | 0.53 in (2015) |
| May 15 | 99.0°F (2014) | 48.9°F (1998) | 0.61 in (2015) |
| May 16 | 95.0°F (2014) | 50.0°F (1999) | 0.10 in (2019) |
| May 17 | 90.0°F (2008) | 50.0°F (1999) | 0.13 in (2011) |
| May 18 | 91.0°F (2008) | 50.0°F (2019) | 0.23 in (2011) |
| May 19 | 86.0°F (2008) | 50.0°F (2011) | 0.16 in (2019) |
| May 20 | 87.1°F (2017) | 53.1°F (2019) | 0.23 in (2019) |
| May 21 | 82.9°F (2005) | 53.1°F (2002) | 0.01 in (2019) |
| May 22 | 80.1°F (2017) | 48.9°F (2002) | 0.64 in (2006) |
| May 23 | 81.0°F (2001) | 50.0°F (2010) | 0.24 in (2008) |
| May 24 | 82.0°F (2006) | 48.9°F (2010) | 0.01 in (2008) |
| May 25 | 82.0°F (2021) | 48.9°F (2008) | 0.03 in (2016) |
| May 26 | 86.0°F (2020) | 51.1°F (1998) | 0.15 in (2019) |
| May 27 | 86.0°F (2020) | 50.0°F (1998) | 0.02 in (2019) |
| May 28 | 84.0°F (2003) | 48.0°F (2019) | 0.00 in (1998) |
| May 29 | 77.0°F (2006) | 52.0°F (2008) | 0.06 in (2011) |
| May 30 | 80.1°F (2006) | 50.0°F (2011) | 0.03 in (2016) |
| May 31 | 82.9°F (2004) | 52.0°F (2011) | 0.01 in (2009) |