Wilmington Average Rainfall by Month

This page shows the average precipitation (including snowfall) in each month of the year in Wilmington, North Carolina. It is based on NOAA data for the years 1991–2020.

Average temperature by month

What's the Rainiest Month in Wilmington?

In Wilmington, September has the greatest precipitation of any month. On average, Wilmington gets 8.7 inches of precipitation in September.

However, August is the month with the greatest chance of precipitation. 44.7% of days in August will have at least some rain.

What's the Driest Month in Wilmington?

In Wilmington, April has the least precipitation of any month. On average, Wilmington gets 3.07 inches of precipitation in April.

April is also the month where rain is least common. 25.7% of days in April will have measurable rain.

Month	Precipitation	% Chance
January	3.81 in	32.0
February	3.47 in	33.4
March	3.97 in	31.1
April	3.07 in	25.7
May	4.54 in	31.0
June	5.67 in	37.3
July	6.86 in	42.6
August	8.16 in	44.7
September	8.69 in	35.7
October	4.66 in	25.8
November	3.55 in	28.4
December	3.69 in	31.8
Year	60.14 in	33.3

Weather Station Details

Years	Station	Coordinates
1948–2024	Wilmington International Airport	location
1870–1947	Wilmington WB City	location