Most Yearly Precipitation in Guam History

This is a list of the largest annual precipitation totals ever recorded in Guam history from 1945–2024.

What Was the Wettest Year in Guam History?

According to NOAA records, the most precipitation that Guam has ever received in a single calendar year is 142.3 inches which occurred in 1976.

Year to date though April 22, 2024: 7.0 inches

Guam Precipitation by Year

Years marked with a gold background have more than 5% incomplete data
Click column headers to sort

Year	Rank	Precipitation (inches)
2024	79	7.0
2023	2	140.0
2022	38	90.1
2021	25	99.9
2020	40	89.1
2019	34	92.0
2018	16	107.7
2017	29	97.2
2016	33	93.9
2015	9	115.8
2014	6	118.5
2013	22	101.6
2012	26	99.1
2011	10	115.5
2010	60	76.8
2009	31	97.1
2008	62	73.4
2007	45	88.0
2006	39	89.8
2005	41	89.1
2004	3	139.3
2003	12	112.3
2002	4	139.1
2001	21	103.0
2000	42	88.4
1999	46	86.9
1998	77	57.9
1997	5	131.7
1996	7	117.2
1995	36	91.7
1994	43	88.2
1993	70	69.6
1992	32	94.7
1991	49	86.3
1990	18	107.2
1989	15	109.5
1988	59	76.9
1987	61	73.9
1986	17	107.3
1985	24	100.3
1984	47	86.6
1983	75	61.1
1982	28	97.8
1981	19	104.9
1980	14	109.8
1979	53	82.4
1978	44	88.0
1977	72	67.5
1976	1	142.3
1975	65	72.3
1974	13	111.0
1973	76	59.1
1972	66	72.2
1971	30	97.2
1970	73	67.3
1969	54	82.0
1968	27	98.0
1967	11	113.9
1966	71	69.5
1965	63	72.8
1964	50	85.5
1963	8	116.4
1962	20	104.5
1961	37	90.9
1960	69	69.7
1959	74	61.6
1958	57	81.1
1957	67	71.7
1956	55	81.9
1955	56	81.3
1954	58	79.2
1953	23	101.1
1952	52	83.4
1951	51	83.8
1950	35	91.8
1949	68	70.7
1948	48	86.4
1947	64	72.7
1946	80	4.9
1945	78	30.9