Most Monthly Precipitation in Honolulu History

This is a list of the largest monthly precipitation totals ever recorded in Honolulu, Hawaii history from 1905–2024.

What Was the Wettest Month in Honolulu History?

According to NOAA records, the most precipitation that Honolulu, Hawaii has ever received in a single month is 20.8 inches which occurred in March 1951.

Honolulu Most Rain in One Month

Rank	Precipitation	Month
1	20.8 inches	March 1951
2	20.4 inches	December 1927
3	20.3 inches	January 1916
4	18.8 inches	November 1996
5	18.5 inches	March 1958
6	17.5 inches	March 1917
7	17.3 inches	December 1987
8	16.9 inches	March 2006
9	14.8 inches	November 1915
10	14.7 inches	November 1965
11	13.7 inches	February 1955
12	13.7 inches	January 1921
13	13.3 inches	January 1957
14	13.2 inches	January 1950
15	12.8 inches	January 1982
16	12.8 inches	April 1924
17	12.3 inches	December 1923
18	12.2 inches	January 1949
19	12.2 inches	January 1907
20	12.1 inches	December 1955