Weather atlas / The seasons
Climate in San Antonio
San Antonio experiences a warm, humid subtropical climate with four distinct seasons. Summers are the hottest, often reaching temperatures in the upper 90s or 100s Fahrenheit. Expect high humidity year-round with frequent, heavy summer thunderstorms.
Temperature in °C · Rainfall in mm · Monthly climate averages
Temperature
Precipitation
Monthly Averages
Monthly detail · Scroll the table to see all measurements →
| Month | High °C | Avg °C | Low °C | Rain | Days | Sun (h) | Comfort |
|---|---|---|---|---|---|---|---|
| May | 29° | 25° | 20° | 0mm | 0 |
All-time Records
Record High31.6°CMay
Record Low18.8°CMay
Driest Month0mmMay
Sunniest MonthhMay