May weather in Oceanside, CA
The average temperature in Oceanside in May is 62.1°F (54.4°F–69.8°F). Average precipitation: 0.30 inches.
May is a spring month in Oceanside, and is warmer than the annual average of 61°F. Daily temperatures swing about 15.4°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 13h 43m. For travel, May is one of the best months of the year to visit.
Avg High
69.8°F
Avg Low
54.4°F
Precipitation
0.30 in
Daylight
13h 43m
May records in Oceanside
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 96.1°F (2014) | 37.9°F (2011) | 0.02 in (2012) |
| May 2 | 93.0°F (2004) | 45.0°F (2002) | 0.03 in (2012) |
| May 3 | 95.0°F (2004) | 43.0°F (2002) | 0.24 in (2003) |
| May 4 | 82.0°F (2004) | 44.1°F (2011) | 0.22 in (2025) |
| May 5 | 79.0°F (2018) | 46.0°F (2002) | 0.11 in (2013) |
| May 6 | 86.0°F (2007) | 44.1°F (2024) | 0.43 in (2013) |
| May 7 | 88.0°F (2007) | 45.0°F (2024) | 1.08 in (2017) |
| May 8 | 89.1°F (2007) | 44.1°F (2017) | 0.23 in (2015) |
| May 9 | 78.1°F (2007) | 46.9°F (2003) | 0.08 in (2019) |
| May 10 | 72.0°F (2020) | 43.0°F (2022) | 0.06 in (2017) |
| May 11 | 75.9°F (2013) | 41.0°F (2022) | 0.04 in (2018) |
| May 12 | 91.9°F (2014) | 39.9°F (2010) | 0.00 in (1999) |
| May 13 | 98.1°F (2014) | 42.1°F (2022) | 0.01 in (2005) |
| May 14 | 99.0°F (2014) | 46.0°F (2008) | 0.76 in (2015) |
| May 15 | 98.1°F (2014) | 46.9°F (2000) | 0.32 in (2015) |
| May 16 | 93.0°F (2014) | 44.1°F (2011) | 0.19 in (2019) |
| May 17 | 84.9°F (2008) | 46.0°F (1999) | 0.32 in (2011) |
| May 18 | 87.1°F (2008) | 45.0°F (2019) | 0.72 in (2011) |
| May 19 | 82.0°F (2017) | 48.9°F (2025) | 0.17 in (2019) |
| May 20 | 84.9°F (2017) | 48.9°F (2025) | 0.04 in (2002) |
| May 21 | 79.0°F (2005) | 45.0°F (2002) | 0.02 in (2018) |
| May 22 | 73.0°F (2001) | 42.1°F (2002) | 0.57 in (2006) |
| May 23 | 73.0°F (2006) | 44.1°F (2021) | 0.18 in (2008) |
| May 24 | 75.0°F (2006) | 45.0°F (2019) | 0.09 in (2015) |
| May 25 | 77.0°F (2021) | 43.0°F (2010) | 0.04 in (2012) |
| May 26 | 75.0°F (2020) | 50.0°F (2010) | 0.06 in (2019) |
| May 27 | 75.9°F (2020) | 46.9°F (2008) | 0.02 in (2001) |
| May 28 | 77.0°F (2000) | 46.9°F (2008) | 0.01 in (2001) |
| May 29 | 75.0°F (2013) | 44.1°F (2010) | 0.03 in (2009) |
| May 30 | 79.0°F (2025) | 45.0°F (2011) | 0.02 in (2009) |
| May 31 | 77.0°F (2006) | 46.0°F (2011) | 0.03 in (2009) |