Galveston Average Rainfall by Month

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

Average temperature by month

What's the Rainiest Month in Galveston?

In Galveston, September has the greatest precipitation of any month. On average, Galveston gets 6.6 inches of precipitation in September.

However, January is the month with the greatest chance of precipitation. 32.1% of days in January will have at least some rain.

What's the Driest Month in Galveston?

In Galveston, February has the least precipitation of any month. On average, Galveston gets 2.42 inches of precipitation in February.

May is the month with the lowest chance of precipitation. 19.1% of days in May will have measurable rain.

Month	Precipitation	% Chance
January	4.21 in	32.1
February	2.42 in	29.4
March	2.95 in	24.1
April	2.44 in	20.6
May	3.03 in	19.1
June	4.56 in	28.6
July	3.21 in	25.8
August	4.82 in	27.6
September	6.56 in	31.2
October	4.83 in	24.4
November	3.84 in	27.4
December	3.91 in	31.0
Year	47.47 in	26.7

Weather Station Details

Years	Station	Coordinates
1999–2024	Galveston Scholes Field	location
1897–1998	Galveston	location