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Half Moon Bay August Weather

Averages and records for weather in Half Moon Bay, California in the month of August.
Typical Half Moon Bay August Weather
1991–2020
Average daily high 65.9 °F
Average daily low 53.9 °F
Average monthly precipitation 0.2 inches
Average monthly snow none
Half Moon Bay August Weather Records
1939–2022
Highest temperature 88 °F August 30, 1968
Lowest temperature 41 °F August 27, 1981
Highest daily low 64 °F August 22, 2004
Lowest daily high 55 °F August 14, 1980
Hottest average temperature 5.1 °F
above average
2015
Coldest average temperature -5.1 °F
below average
1969
Most daily precipitation 0.7 inches August 20, 1997
Most monthly precipitation 1.6 inches 1976
Most daily snow none -
Most monthly snow none -
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
August 1 65.5 53.6 82 44
August 2 65.5 53.6 76 43
August 3 65.5 53.6 75 45
August 4 65.5 53.6 75 45
August 5 65.5 53.6 74 44
August 6 65.5 53.7 71 44
August 7 65.5 53.7 73 42
August 8 65.5 53.8 83 41
August 9 65.6 53.8 73 41
August 10 65.6 53.8 75 43
August 11 65.6 53.9 71 44
August 12 65.7 53.9 73 44
August 13 65.7 53.8 84 43
August 14 65.8 53.8 82 43
August 15 65.8 53.8 82 43
August 16 65.9 53.8 82 44
August 17 65.9 53.8 72 43
August 18 66.0 53.7 74 47
August 19 66.1 53.7 72 44
August 20 66.1 53.6 73 45
August 21 66.2 53.6 74 45
August 22 66.2 53.5 75 46
August 23 66.2 53.3 77 44
August 24 66.3 53.2 77 44
August 25 66.3 53.1 81 46
August 26 66.3 53.1 77 43
August 27 66.3 53.1 73 41
August 28 66.4 53.0 84 43
August 29 66.4 53.0 80 45
August 30 66.4 53.0 88 42
August 31 66.4 53.0 82 43
Weather Station Details
Years Station Coordinates
1939–2022 Half Moon Bay location