Weather in Austin in September
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Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youAustin in September is hot — daytime temperatures average 32.7°C, dropping to 22.5°C at night. The month is fairly wet (8 rainy days on average), with roughly 10.3 hours of sunshine a day. It is one of the best months of the year to visit. For the complete picture, see the best time to visit Austin — every month compared. Once you know when to go, find your Austin packing list at 247PackingList.
Get ready for Austin in September
Search flights to Austin
Compare 100+ airlines for September — one search, best price.
Search Flights →Travel clothing layers
Pack layers — temperatures can vary significantly between day and night.
Check Price →What to pack for Austin in September
- Lightweight, breathable clothing
- High SPF sunscreen
- Sunglasses
- Sun hat
- Reusable water bottle
- Light waterproof layer
Compare all months in Austin
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 17.4°C | 86.3mm | 10/10 |
| February | 16.9°C | 79.4mm | 10/10 |
| March | 23.8°C | 86.5mm | 10/10 |
| April | 26.3°C | 141.9mm | 9/10 |
| May | 29.8°C | 196.2mm | 9/10 |
| June | 33.9°C | 96.8mm | 10/10 |
| July | 35.6°C | 67.1mm | 8/10 |
| August | 36.2°C | 119.7mm | 7/10 |
| September | 32.7°C | 93.2mm | 10/10 |
| October | 27.7°C | 117.2mm | 9/10 |
| November | 21.0°C | 90.1mm | 10/10 |
| December | 19.0°C | 68.1mm | 10/10 |
Full month-by-month guide: best time to visit Austin →
For facts about United States — currency, language and dialling code — see our United States country guide at 247CountryInfo. Travellers also find it useful to keep a Austin travel guide to hand. Check clothing sizes in United States before you shop.
Frequently Asked Questions
Is September a good time to visit Austin?
September rates 10/10 for visiting Austin — excellent time to visit. Expect average highs of 32.7°C, 93.2mm of rain across the month and about 10.3 hours of daily sunshine.
What is the temperature in Austin in September?
In September, Austin has average highs of 32.7°C (90.9°F) and average lows of 22.5°C (72.5°F).
Does it rain in Austin in September?
Some rain is likely. Austin averages 93.2mm across about 8 rainy days in September, so a light waterproof layer is worth packing.
What should I wear in Austin in September?
For Austin in September (32.7°C highs / 22.5°C lows), pack lightweight, breathable clothing plus high spf sunscreen, sunglasses, sun hat.
More essentials for Austin in September
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.