Month-by-month travel weather
Austin September weather
Austin, United States · September
Warm days, gradually easier evenings
September can still feel hot, especially midday, though later in the month the evenings can start to feel easier.
Rain can still happen intermittently, sometimes changing road conditions quickly.
September averages at a glance
Average low
around 21–23°C
Average high
around 33–36°C
Average precipitation
around 55–95 mm
Rainy days
about 4–7 days
What to wear in September in Austin
Actual feel will change with wind and rain, but use the suggestions below to build a comfortable layered outfit.
- • Daytime: summer clothing + sun protection.
- • Optional thin layer for evenings.
- • Optional rain option.
Travel tips for visiting Austin in September
- • If evenings are nicer, shift longer outdoor time later.
- • After rain, humidity and heat can rebound fast.
September weather in Austin — FAQ
Q. Is September still extreme heat?
A. Many days are still hot, but easing windows can appear later.
Q. Is it rainy?
A. Rain is possible, often intermittently.
Explore Austin
These pages are connected so you can compare conditions and decide for yourself.