May weather in Santa Ana, CA
The average temperature in Santa Ana in May is 66.4°F (58.1°F–74.7°F). Average precipitation: 0.29 inches.
May is a spring month in Santa Ana, and is warmer than the annual average of 66.1°F. Daily temperatures swing about 16.6°F between overnight low and afternoon high. Expect about 2 days with precipitation. Daylight averages about 13h 45m. For travel, May is one of the best months of the year to visit.
Avg High
74.7°F
Avg Low
58.1°F
Precipitation
0.29 in
Daylight
13h 45m
May records in Santa Ana
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 96.1°F (2014) | 41.0°F (1933) | 0.80 in (1955) |
| May 2 | 102.0°F (2004) | 39.9°F (1953) | 0.36 in (1915) |
| May 3 | 105.1°F (2004) | 37.9°F (1933) | 0.80 in (2003) |
| May 4 | 98.1°F (2011) | 35.1°F (1950) | 0.62 in (1930) |
| May 5 | 96.1°F (1928) | 37.0°F (1920) | 0.83 in (1998) |
| May 6 | 95.0°F (1990) | 39.9°F (1920) | 0.75 in (1921) |
| May 7 | 99.0°F (2007) | 39.9°F (1950) | 0.74 in (1955) |
| May 8 | 99.0°F (2007) | 36.0°F (1950) | 1.10 in (1977) |
| May 9 | 96.1°F (1923) | 37.0°F (1950) | 0.65 in (1977) |
| May 10 | 99.0°F (1923) | 37.0°F (1922) | 0.71 in (1947) |
| May 11 | 98.1°F (1934) | 37.9°F (1922) | 0.28 in (1933) |
| May 12 | 98.1°F (1979) | 39.9°F (1922) | 0.38 in (1998) |
| May 13 | 100.0°F (1979) | 41.0°F (1930) | 1.14 in (1998) |
| May 14 | 102.9°F (1927) | 39.9°F (1935) | 0.37 in (2015) |
| May 15 | 102.9°F (2014) | 42.1°F (1920) | 0.28 in (2015) |
| May 16 | 96.1°F (1956) | 41.0°F (1943) | 0.25 in (2019) |
| May 17 | 97.0°F (2008) | 42.1°F (1943) | 0.12 in (1938) |
| May 18 | 95.0°F (2008) | 41.0°F (1943) | 0.22 in (2011) |
| May 19 | 97.0°F (1943) | 42.1°F (1933) | 0.22 in (1957) |
| May 20 | 98.1°F (1942) | 37.9°F (1948) | 0.10 in (1975) |
| May 21 | 95.0°F (1931) | 37.0°F (1948) | 0.89 in (1921) |
| May 22 | 93.0°F (1941) | 41.0°F (1933) | 1.19 in (1921) |
| May 23 | 96.1°F (1930) | 42.1°F (1927) | 0.29 in (1921) |
| May 24 | 100.9°F (1932) | 43.0°F (1939) | 0.24 in (1977) |
| May 25 | 97.0°F (1927) | 42.1°F (1945) | 0.65 in (1931) |
| May 26 | 93.0°F (1939) | 39.9°F (1953) | 0.30 in (1906) |
| May 27 | 91.9°F (2000) | 41.0°F (1918) | 0.20 in (1906) |
| May 28 | 98.1°F (1978) | 44.1°F (1945) | 0.52 in (1990) |
| May 29 | 98.1°F (1978) | 39.9°F (1953) | 0.01 in (1919) |
| May 30 | 95.0°F (2025) | 39.9°F (1918) | 0.27 in (1947) |
| May 31 | 89.1°F (2004) | 42.1°F (1923) | 0.00 in (1906) |