Most Monthly Precipitation in Northam History

This is a list of the largest monthly precipitation totals ever recorded in Northam, Western Australia history from 1750–2023.

What Was the Wettest Month in Northam History?

According to NOAA records, the most precipitation that Northam, Western Australia has ever received in a single month is 23.3 cm which occurred in June 1945.

Northam Most Rain in One Month

Rank	Precipitation	Month
1	23.3 cm	June 1945
2	22.1 cm	July 1958
3	20.8 cm	June 1923
4	19.7 cm	July 1917
5	19.0 cm	February 1955
6	18.9 cm	March 1934
7	18.2 cm	June 1968
8	17.6 cm	July 1946
9	17.3 cm	July 1964
10	17.1 cm	July 1928
11	17.0 cm	August 1955
12	16.8 cm	March 1971
13	16.4 cm	July 1926
14	16.2 cm	June 1910
15	15.9 cm	June 1983
16	15.2 cm	August 2022
17	15.2 cm	July 2021
18	15.1 cm	June 1964
19	14.7 cm	July 1915
20	14.6 cm	June 1957