Month-by-month travel weather
San Antonio August weather
San Antonio, United States · August
Indoor A/C contrast can be noticeable
Heat continues, and humidity can raise the heat index. Indoor breaks help.
August averages at a glance
Average low
around 24–25°C
Average high
around 36–37°C
Average precipitation
around 45–85 mm
Precip days
about 4–7 days
What to wear in August in San Antonio
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • Breathable clothing
- • Optional indoor layer
Travel tips for visiting San Antonio in August
- • Pair water with electrolytes if you sweat a lot.
August weather in San Antonio — FAQ
Q. Are nights still hot in August?
A. Yes—nights often stay warm.
Explore San Antonio
These pages are connected so you can compare conditions and decide for yourself.