Average August Temperature in Half Moon Bay by Year

This page contains a list of the average monthly high and low temperatures in Half Moon Bay, California for the month of August each year between 1939 and 2023. It is based on NOAA data.

Change:

Month:

What Was the Hottest August Ever in Half Moon Bay?

2015 was the warmest August in the history of Half Moon Bay, California. The average daily high temperature was 71.5 °F, and the average low was 58.0 °F.

What Was the Coldest August Ever in Half Moon Bay?

1969 was the coolest August in the history of Half Moon Bay, California. The average daily high temperature was 61.5 °F, and the average low was 47.6 °F.

* click column headers to sort

Year	Rank	High (°F)	Low (°F)
2023	21	65.0	55.3
2022	19	65.2	55.2
2021	18	65.8	54.8
2020	14	66.6	54.9
2019	9	66.7	56.3
2018	35	64.3	54.3
2017	15	65.1	56.3
2016	31	64.1	55.1
2015	1	71.5	58.0
2014	2	68.9	57.3
2013	5	67.7	55.9
2012	63	64.4	51.4
2011	57	63.6	53.1
2010	48	65.0	52.4
2009	16	67.8	53.1
2008	33	66.0	52.8
2007	24	66.8	53.4
2006	27	66.4	53.1
2005	60	64.7	51.9
2004	7	68.3	55.1
2001	47	64.9	52.6
2000	44	65.3	52.3
1999	36	64.9	53.6
1998	55	63.9	52.9
1997	4	68.4	56.8
1996	61	63.7	52.2
1995	37	65.6	52.5
1994	56	64.5	52.3
1992	65	64.7	50.5
1991	39	64.1	53.9
1990	11	66.9	54.9
1989	40	65.6	52.4
1987	23	66.1	54.1
1986	28	65.9	53.6
1985	29	66.6	52.8
1984	25	66.3	53.6
1983	3	69.6	56.2
1982	41	65.2	52.7
1981	46	65.9	51.6
1980	54	63.5	53.5
1979	34	65.2	53.4
1978	38	66.5	51.5
1977	12	67.5	54.3
1976	8	68.4	55.0
1975	71	62.8	51.1
1974	30	65.1	54.2
1973	68	63.2	51.4
1972	20	68.0	52.3
1971	58	65.0	51.6
1970	76	63.6	46.6
1969	78	61.5	47.6
1968	26	66.1	53.6
1967	53	63.4	53.6
1966	64	64.5	51.1
1965	17	67.0	53.7
1963	66	64.1	51.0
1962	59	64.2	52.4
1961	6	67.1	56.4
1960	67	63.4	51.2
1959	13	67.1	54.5
1958	22	65.4	54.9
1957	51	64.8	52.4
1956	74	62.0	50.6
1955	77	61.6	48.3
1954	72	62.5	51.4
1953	43	64.2	53.4
1952	42	66.2	51.7
1951	73	60.6	52.3
1949	49	63.2	54.1
1948	52	64.2	52.9
1947	10	67.6	54.5
1946	70	61.6	52.6
1945	75	61.6	50.2
1944	69	63.4	51.1
1943	62	63.4	52.5
1942	50	64.3	53.0
1940	32	65.6	53.6
1939	45	65.4	52.2

Weather Station Details

Years	Station	Coordinates
1939–2024	Half Moon Bay	location