April weather in Half Moon Bay, CA
The average temperature in Half Moon Bay in April is 52.9°F (44.7°F–61.0°F). Average precipitation: 1.81 inches.
April is a spring month in Half Moon Bay, and is cooler than the annual average of 54.9°F. Daily temperatures swing about 16.3°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 58m. For travel, April is a comfortable month to visit.
Avg High
61.0°F
Avg Low
44.7°F
Precipitation
1.81 in
Daylight
12h 58m
April records in Half Moon Bay
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| April 1 | 84.0°F (2000) | 32.0°F (1976) | 1.81 in (1974) |
| April 2 | 82.0°F (1959) | 33.1°F (2009) | 0.59 in (1982) |
| April 3 | 75.0°F (1961) | 35.1°F (2022) | 1.65 in (1958) |
| April 4 | 77.0°F (2011) | 32.0°F (2009) | 2.36 in (1941) |
| April 5 | 84.0°F (1989) | 34.0°F (2009) | 1.27 in (1969) |
| April 6 | 88.0°F (2016) | 35.1°F (1991) | 1.72 in (1967) |
| April 7 | 88.0°F (2016) | 35.1°F (1991) | 1.43 in (2018) |
| April 8 | 82.0°F (1989) | 33.1°F (2013) | 1.05 in (1976) |
| April 9 | 82.0°F (1988) | 25.0°F (1982) | 0.70 in (1965) |
| April 10 | 81.0°F (1988) | 36.0°F (1945) | 1.20 in (1965) |
| April 11 | 84.0°F (1962) | 35.1°F (1991) | 1.39 in (1982) |
| April 12 | 84.9°F (1947) | 34.0°F (1982) | 1.54 in (2026) |
| April 13 | 78.1°F (1947) | 34.0°F (2023) | 1.05 in (2012) |
| April 14 | 80.1°F (1999) | 35.1°F (2005) | 0.60 in (1957) |
| April 15 | 82.0°F (1999) | 34.0°F (2007) | 1.88 in (1978) |
| April 16 | 78.1°F (2015) | 32.0°F (2007) | 0.60 in (2022) |
| April 17 | 75.0°F (2016) | 34.0°F (2008) | 1.72 in (2000) |
| April 18 | 80.1°F (1992) | 34.0°F (2008) | 0.64 in (1957) |
| April 19 | 80.1°F (1992) | 33.1°F (2007) | 1.35 in (1988) |
| April 20 | 77.0°F (1982) | 30.9°F (2008) | 0.74 in (2010) |
| April 21 | 80.1°F (1982) | 36.0°F (2008) | 0.70 in (1965) |
| April 22 | 84.9°F (2009) | 36.0°F (1945) | 0.64 in (2007) |
| April 23 | 82.9°F (1966) | 37.9°F (1945) | 0.54 in (1974) |
| April 24 | 79.0°F (1966) | 33.1°F (2008) | 1.00 in (1983) |
| April 25 | 79.0°F (1992) | 35.1°F (2008) | 0.58 in (1955) |
| April 26 | 72.0°F (1965) | 37.0°F (1942) | 0.44 in (1944) |
| April 27 | 80.1°F (2004) | 37.0°F (1955) | 2.31 in (1953) |
| April 28 | 80.1°F (1996) | 37.9°F (1955) | 0.80 in (1951) |
| April 29 | 84.9°F (1996) | 36.0°F (1970) | 0.66 in (1987) |
| April 30 | 84.0°F (2014) | 30.9°F (2008) | 0.52 in (1983) |