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San Antonio (TX) Climate by Month

The graphs below provide an overview of the climate in San Antonio (Texas), the United States of America. They present long-term patterns and averages of weather conditions over a 30-year period.

Average day and night temperature

The mean minimum and maximum temperatures over the year.

Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc.

Forecast for San Antonio (TX)

Fri   Jun 14
37°C | 25°C
E 18 km/h
almost clear and no rain

almost clear and no rain

Sat   Jun 15
37°C | 24°C
SE 22 km/h
almost clear and no rain

almost clear and no rain

Sun   Jun 16
38°C | 25°C
SE 25 km/h
almost clear and no rain

almost clear and no rain

The best time of year to visit San Antonio in the United States of America

San Antonio has a combination of a humid subtropical climate and a semi-arid climate. The weather is heavily influenced by the Gulf of Mexico. Because of this influence, the average temperature during the winter months is just slightly higher than in more northern Texas towns. In general San Antonio has very hot, long, and humid summers and mild to cool winters.

Average precipitation is distributed fairly evenly throughout the year. During the warmest days, the mercury can rise considerably, and temperatures above 40°C is no exception. The city is subject to cold fronts during winter with cool to cold nights, typically seeing minimum temperatures at or near freezing.

During the months of February, March and November you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:

  • Which is the warmest month in San Antonio?
    August has an average maximum temperature of 36°C and is the warmest month of the year.
  • Which is the coldest month in San Antonio?
    The coldest month is January with an average maximum temperature of 18°C.
  • Which is the wettest month in San Antonio?
    May tops the wettest month list with 130 mm of rainfall.
  • Which is the driest month in San Antonio?
    December is the driest month with 34 mm of precipitation.
  • Which is the sunniest month in San Antonio?
    July is the sunniest month with an average of 310 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.