Climate Insights for San Antonio

The climate in San Antonio is temperate. The average annual temperature is 12°C and approximately 143 mm of precipitation falls per year. January is the wettest month, receiving around 48 mm of rainfall. San Antonio is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: January, December, February. The coldest months are July, June, August, when temperatures can drop to -1°C. Light snow can occur between June and August.The climate in San Antonio is temperate. The average annual temperature is 54°F and approximately 5.6 in of precipitation falls per year. January is the wettest month, receiving around 1.9 in of rainfall. San Antonio is in the Southern Hemisphere. The seasons are reversed: summer runs from December to February, while winter falls between June and August. The summer months are: January, December, February. The coldest months are July, June, August, when temperatures can drop to 30°F. Light snow can occur between June and August.

Temperatures in San Antonio vary considerably across the year, with a 25°C difference between the coldest and warmest months. January is the warmest month, though highs remain moderate at 24°C with a mean of 18°C. The coldest month is July, when overnight lows fall to -1°C and the daily average is 6°C. On average, daily temperatures fluctuate by about 14°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 4°C shift in average temperatures.Temperatures in San Antonio vary considerably across the year, with a 45°F difference between the coldest and warmest months. January is the warmest month, though highs remain moderate at 75°F with a mean of 64°F. The coldest month is July, when overnight lows fall to 30°F and the daily average is 43°F. On average, daily temperatures fluctuate by about 25°F between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 6°F shift in average temperatures.

San Antonio is a quite dry location, receiving approximately 143 mm of precipitation annually, which averages out to around 12 mm per month. The wettest month is January, averaging 48 mm of rainfall. February and December also tend to see above-average precipitation. The driest month is July, with just 1 mm. That's 47 mm less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between June and August, totalling around 6cm annually. June is the snowiest month with approximately 2cm.San Antonio is a quite dry location, receiving approximately 5.6 in of precipitation annually, which averages out to around 0.5 in per month. The wettest month is January, averaging 1.9 in of rainfall. February and December also tend to see above-average precipitation. The driest month is July, with just 0 in. That's 1.9 in less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between June and August, totalling around 2in annually. June is the snowiest month with approximately 1in.

San Antonio is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is June, averaging 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.San Antonio is relatively calm, with an average annual wind speed of 4mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is June, averaging 5mph, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 4mph, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1mph between the calmest and windiest months.

The best time to visit San Antonio is during January, February, March, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 24 mm per month. By contrast, July can be quite cold with temperatures dropping to -1°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.The best time to visit San Antonio is during January, February, March, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 62°F with modest rainfall averaging 0.9 in per month. By contrast, July can be quite cold with temperatures dropping to 30°F. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for San Antonio based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.The table below shows monthly climate averages for San Antonio based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Fahrenheit (°F). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in inches (in) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in miles per hour (mph). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.