San Antonio Weather in August

Average temperatures, rainfall and packing tips for San Antonio, United States in August

🌡️ Avg high
37°C
🌙 Avg low
26°C
🌧️ Rainfall
~23 mm
📊 Warmth rank
#1 of 12

August in San Antonio at a glance

August in San Antonio is typically very hot, with average daytime highs around 37°C and nights near 26°C. It is usually the warmest month of the year in San Antonio.

Rainfall is light in August: roughly 23 mm across the whole month.

What to pack for San Antonio in August

San Antonio - year at a glance

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Is August a good time to visit San Antonio?

🧳 August is seriously hot in San Antonio. It's still doable - plan outdoor activities for early morning or evening, and build in shade and hydration breaks around midday.

If your dates are flexible, the most comfortable months in San Antonio are usually February, March, April, November and December.

Other months in San Antonio

August in other cities

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FAQ

How hot is San Antonio in August?

In August, San Antonio averages a daytime high of about 37°C and a night-time low of around 26°C, based on recent historical data. That makes it the warmest month of the year there.

Does it rain in San Antonio in August?

Rainfall is light in August: roughly 23 mm across the whole month.

Is August a good time to visit San Antonio?

August is seriously hot in San Antonio. It's still doable - plan outdoor activities for early morning or evening, and build in shade and hydration breaks around midday. If your dates are flexible, the most comfortable months in San Antonio are usually February, March, April, November and December.