Most Yearly Precipitation in Half Moon Bay History

This is a list of the largest annual precipitation totals ever recorded in Half Moon Bay, California history from 1939–2024.

What Was the Wettest Year in Half Moon Bay History?

According to NOAA records, the most precipitation that Half Moon Bay, California has ever received in a single calendar year is 52.3 inches which occurred in 1983.

Year to date though April 23, 2024: 19.0 inches

Half Moon Bay Precipitation by Year

Years marked with a gold background have more than 5% incomplete data
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Year	Rank	Precipitation (inches)
2024	60	19.0
2023	20	29.8
2022	68	17.7
2021	40	24.5
2020	82	11.4
2019	27	27.8
2018	61	18.8
2017	18	30.4
2016	29	27.4
2015	84	9.5
2014	52	21.0
2013	85	6.6
2012	33	25.9
2011	54	20.5
2010	16	30.6
2009	50	21.6
2008	58	19.2
2007	62	18.6
2006	19	30.2
2005	7	35.1
2004	30	27.2
2003	71	16.3
2002	80	12.4
2001	69	17.6
2000	13	32.8
1999	28	27.4
1998	3	44.8
1997	32	26.0
1996	5	36.3
1995	10	33.9
1994	65	18.0
1993	39	24.6
1992	24	28.6
1991	42	24.1
1990	74	15.3
1989	63	18.4
1988	59	19.0
1987	34	25.0
1986	15	31.4
1985	73	15.4
1984	43	23.7
1983	1	52.3
1982	2	48.6
1981	12	33.0
1980	53	20.6
1979	8	34.3
1978	23	28.6
1977	56	19.6
1976	79	13.1
1975	38	24.6
1974	37	24.7
1973	6	36.2
1972	47	22.0
1971	77	13.9
1970	17	30.5
1969	21	29.3
1968	35	25.0
1967	14	31.8
1966	64	18.3
1965	46	22.1
1964	57	19.4
1963	48	21.9
1962	25	28.0
1961	72	16.0
1960	67	17.8
1959	66	18.0
1958	22	29.1
1957	45	22.8
1956	81	12.0
1955	36	24.9
1954	51	21.4
1953	76	14.4
1952	11	33.2
1951	44	23.5
1950	55	19.7
1949	83	9.9
1948	70	16.6
1947	78	13.6
1946	75	14.6
1945	41	24.3
1944	31	26.8
1943	49	21.9
1942	26	27.8
1941	4	38.7
1940	9	34.0
1939	86	2.4