July weather in Half Moon Bay, CA
The average temperature in Half Moon Bay in July is 58.8°F (52.7°F–64.8°F). Average precipitation: 0.14 inches.
July is a summer month in Half Moon Bay, and is warmer than the annual average of 54.9°F. Daily temperatures swing about 12.1°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 14h 21m. For travel, July is a comfortable month to visit.
Avg High
64.8°F
Avg Low
52.7°F
Precipitation
0.14 in
Daylight
14h 21m
July records in Half Moon Bay
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| July 1 | 71.1°F (1970) | 42.1°F (1966) | 0.05 in (2012) |
| July 2 | 81.0°F (1970) | 43.0°F (1962) | 0.12 in (2022) |
| July 3 | 75.0°F (1970) | 43.0°F (1976) | 0.08 in (1958) |
| July 4 | 70.0°F (1981) | 42.1°F (1976) | 0.05 in (1997) |
| July 5 | 72.0°F (1940) | 41.0°F (1993) | 0.07 in (2000) |
| July 6 | 71.1°F (1981) | 41.0°F (1993) | 0.05 in (2022) |
| July 7 | 73.0°F (2015) | 41.0°F (1991) | 0.04 in (2023) |
| July 8 | 72.0°F (2015) | 39.9°F (1982) | 0.60 in (1974) |
| July 9 | 72.0°F (1964) | 42.1°F (1989) | 0.32 in (1974) |
| July 10 | 78.1°F (1959) | 43.0°F (1953) | 0.04 in (1954) |
| July 11 | 73.9°F (1959) | 43.0°F (1984) | 0.04 in (1975) |
| July 12 | 73.9°F (2015) | 43.0°F (2020) | 0.10 in (1988) |
| July 13 | 75.0°F (1972) | 44.1°F (1975) | 0.12 in (2011) |
| July 14 | 73.0°F (1972) | 44.1°F (2009) | 0.03 in (2012) |
| July 15 | 73.9°F (1957) | 44.1°F (1953) | 0.24 in (1975) |
| July 16 | 71.1°F (1942) | 45.0°F (1970) | 0.09 in (1956) |
| July 17 | 71.1°F (1961) | 43.0°F (1955) | 0.30 in (1958) |
| July 18 | 72.0°F (2015) | 42.1°F (2008) | 0.10 in (2007) |
| July 19 | 78.1°F (2015) | 42.1°F (1960) | 0.06 in (2001) |
| July 20 | 77.0°F (2015) | 43.0°F (1939) | 0.09 in (1985) |
| July 21 | 72.0°F (2007) | 43.0°F (1939) | 0.29 in (1979) |
| July 22 | 73.0°F (2007) | 44.1°F (1954) | 0.05 in (1986) |
| July 23 | 81.0°F (2005) | 39.9°F (2008) | 0.05 in (1951) |
| July 24 | 71.1°F (2014) | 44.1°F (2008) | 0.04 in (2007) |
| July 25 | 71.1°F (2014) | 46.0°F (1955) | 0.20 in (1946) |
| July 26 | 71.1°F (1947) | 45.0°F (1943) | 0.08 in (1971) |
| July 27 | 77.0°F (2004) | 43.0°F (1943) | 0.07 in (2025) |
| July 28 | 102.0°F (1982) | 46.0°F (2015) | 0.07 in (1971) |
| July 29 | 71.1°F (1964) | 45.0°F (1977) | 0.07 in (1971) |
| July 30 | 75.9°F (1977) | 45.0°F (1970) | 0.21 in (2001) |
| July 31 | 73.9°F (1977) | 45.0°F (1945) | 0.12 in (2025) |