Climate Insights for San Antonio

The climate in San Antonio is hot. The average annual temperature is 27°C and approximately 1,230 mm of precipitation falls per year. June is the wettest month, receiving around 236 mm of rainfall. San Antonio is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, August. The coldest months are January, December, February, when temperatures can drop to 20°C.The climate in San Antonio is hot. The average annual temperature is 80°F and approximately 48.4 in of precipitation falls per year. June is the wettest month, receiving around 9.3 in of rainfall. San Antonio is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: May, April, August. The coldest months are January, December, February, when temperatures can drop to 68°F.

San Antonio sees moderate temperature variation throughout the year, ranging from 20°C to 35°C. The warmest month is May, when average highs reach 35°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 20°C and an average of 24°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs.San Antonio sees moderate temperature variation throughout the year, ranging from 68°F to 95°F. The warmest month is May, when average highs reach 95°F and the mean temperature sits around 85°F. January is the coolest month, with minimum temperatures around 68°F and an average of 75°F. On average, daily temperatures fluctuate by about 16°F between overnight lows and afternoon highs.

San Antonio is a fairly wet location, receiving approximately 1,230 mm of precipitation annually, which averages out to around 102 mm per month. The wettest month is June, averaging 236 mm of rainfall. September and October also tend to see above-average precipitation. The driest month is March, with just 25 mm. That's 210 mm less than June, 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.San Antonio is a fairly wet location, receiving approximately 48.4 in of precipitation annually, which averages out to around 4 in per month. The wettest month is June, averaging 9.3 in of rainfall. September and October also tend to see above-average precipitation. The driest month is March, with just 1 in. That's 8.3 in less than June, 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.

San Antonio is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 11km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/h gap between the calmest and windiest months.San Antonio is mildly breezy, with an average annual wind speed of 6mph. For context, sustained winds below 7mph are generally light, while anything above 16mph is considered strong. The windiest month is April, averaging 7mph, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 4mph, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3mph gap between the calmest and windiest months.

The best time to visit San Antonio is during January and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 24°C with modest rainfall averaging 57 mm per month. By contrast, May can be uncomfortably hot with temperatures reaching 35°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.The best time to visit San Antonio is during January and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 75°F with modest rainfall averaging 2.2 in per month. By contrast, May can be uncomfortably hot with temperatures reaching 95°F. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

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. 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. 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.