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Austin weather in September 2025
Expect 32°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Austin in September. Check more long-term weather averages for Austin in September before you book your next holiday to Texas in 2025/2026.
- 3232°C max day temperature
- 8 hours of sunshine per day
- 88 days with some rainfall
- 2020°C min night temperature
- 1212 hours of daylight per day
- HHigh heat & humidity
- 9090 mm of monthly rainfall
- 99 (Very High) UV index
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Recommended for Texas
The September weather guide for Texas (Austin) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Austin in September?
Daytime temperatures usually reach 32°C in Austin in September with high heat and humidity, falling to 20°C at night.
How sunny is it in Austin in September?
There are normally 8 hours of bright sunshine each day in Austin in September - that's 63% of daylight hours.
Does it rain in Austin in September?
There are usually 8 days with some rain in Austin in September and the average monthly rainfall is 90mm.
What is the chance of a hurricane in Austin in September?
On average less than 1 day in September in Austin is likely to be affected by the passage of one or more tropical storms.
Austin September sunrise & sunset times
Browse the sunrise and sunset times for Austin in September 2025. Select a month to view Austin sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 06:08 | 18:53 |
Monday, 15th September 2025 | 06:16 | 18:36 |
Tuesday, 30th September 2025 | 06:24 | 18:17 |
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