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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
Daily chance of precipitation	24.8%
Daily chance of snow	0%

Half Moon Bay August Weather Records 1939–2024
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 high temperature	71.5 °F	2015
Coldest average high temperature	60.6 °F	1951
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)
Day	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
1939–2024	Half Moon Bay	location