Most Monthly Precipitation in San Antonio History

This is a list of the largest monthly precipitation totals ever recorded in San Antonio, Texas history from 1893–2024.

What Was the Wettest Month in San Antonio History?

According to NOAA records, the most precipitation that San Antonio, Texas has ever received in a single month is 18.1 inches which occurred in October 1998.

Month to date though April 26, 2024: 1.9 inches

San Antonio Most Rain in One Month

Rank	Precipitation	Month
1	18.1 inches	October 1998
2	16.9 inches	July 2002
3	16.9 inches	September 2018
4	14.0 inches	December 1991
5	13.2 inches	May 2013
6	13.1 inches	September 1973
7	12.9 inches	May 1987
8	12.5 inches	May 1993
9	12.0 inches	June 1986
10	11.9 inches	October 2009
11	11.8 inches	July 2007
12	11.2 inches	May 1972
13	11.2 inches	September 1967
14	11.1 inches	August 1974
15	11.1 inches	September 1957
16	10.4 inches	June 1973
17	10.2 inches	May 1935
18	10.1 inches	October 1919
19	9.8 inches	May 2012
20	9.8 inches	October 1994