Austin Weather in September
United States · 30-year monthly averages
🤔 Fair time to visit
September in Austin is hot, with average daytime highs around 33°C (91°F) and nighttime lows near 21°C (70°F). Expect roughly 88mm of precipitation spread over about 5 rainy days, with a moderate amount of rain.
Avg high
33°C
91°F
Avg low
21°C
70°F
Rainfall
88mm
moderate
Rainy days
5
days with ≥1mm
🎒 What to pack
- breathable summer clothing
- sunscreen, hat and sunglasses
- refillable water bottle
September vs the rest of the year
FAQ
- How hot is Austin in September?
- September in Austin is hot, with average daytime highs around 33°C (91°F) and nighttime lows near 21°C (70°F). Expect roughly 88mm of precipitation spread over about 5 rainy days, with a moderate amount of rain.
- Does it rain a lot in Austin in September?
- Austin sees around 88mm of precipitation in September on average — moderate by global standards.
- Is September a good time to visit Austin?
- September is a workable month to visit Austin, but expect some weather trade-offs.