Santa Ana Average Rainfall by Month

This page shows the average precipitation in each month of the year in Santa Ana, California. It is based on NOAA data for the years 1991–2020.
What's the Rainiest Month in Santa Ana?
In Santa Ana, February has the greatest precipitation of any month. On average, Santa Ana gets 3.2 inches of precipitation in February.
February is also the month where rain is most common. 23.2% of days in February will have at least some rain.
What's the Driest Month in Santa Ana?
In Santa Ana, August has the least precipitation of any month. On average, Santa Ana gets 0.002 inches of precipitation in August.
August is also the month where rain is least common. Only 0.32% of days in August will have measurable rain.
Month Precipitation % Chance
January 2.89 in 20.3
February 3.18 in 23.2
March 1.69 in 15.7
April 0.80 in 9.7
May 0.29 in 5.4
June 0.08 in 1.9
July 0.04 in 1.6
August 0.00 in 0.3
September 0.12 in 2.0
October 0.53 in 6.6
November 0.79 in 9.4
December 2.25 in 18.7
Year 12.38 in 9.5
Weather Station Details
Years Station Coordinates
1906–2024 Santa Ana Fire Station location
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