Rainy days · Texas
How often does it rain in San Antonio?
San Antonio’s rain arrives rarely, so the River Walk gets to keep all the attention.
San Antonio gets measurable rain or snow on about 81 days a year, adding up to about 32 inches.
November usually brings San Antonio about 6 wet days and 2.1 inches. The wettest month is usually March, with about 9 wet days, and the driest is August, with about 5 wet days. That makes San Antonio number 111 of the 129 US cities we track, rainiest first.
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Rainy days, month by month
| Month | Wet days | Inches |
|---|---|---|
| January | 7 | 2.0 |
| February | 7 | 1.7 |
| March | 9 | 2.3 |
| April | 6 | 2.4 |
| May | 8 | 4.4 |
| June | 7 | 3.3 |
| July | 5 | 2.4 |
| August | 5 | 2.1 |
| September | 7 | 3.9 |
| October | 6 | 3.8 |
| November | 6 | 2.1 |
| December | 8 | 2.0 |
Cities with about as many rainy days
- Denver, Colorado: about 82 wet days a year
- Flagstaff, Arizona: about 82 wet days a year
- Oklahoma City, Oklahoma: about 83 wet days a year
Source: NOAA daily precipitation records for the San Antonio area, 1991 to 2020 (at least 30 complete years behind every month), via the Applied Climate Information System. A wet day here means at least a hundredth of an inch of rain or melted snow.