San Antonio (TX) Climate by Month
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.
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 hours of sunshine
The average monthly total hours of sunshine over the year
Daily percent of sunshine
The mean percent of hours of sunhours during the day over the year
Monthly precipitation
The mean monthly precipitation over the year, including rain, snow, hail etc.
Monthly rainy days
The average number of days each month with rain, snow, hail etc.
Average humidity
The mean monthly relative humidity over the year
