Monthly climate guide
Austin weather in August
With highs near 38°C (100°F) and lows around 25°C (76°F), August feels very hot in Austin. Rainfall averages about 66 mm (some rain) and the sky is a mix of sun and cloud. Daytime highs are about the same as July and 4°C warmer than September.
What stands out in August
- Nights stay warm, rarely below 25°C — air-conditioning helps.
- Expect a big gap between day and night — about 13°C.
- Skies are at their clearest this time of year.
- It cools down fast from here: September is about 4°C cooler.
August is typically Austin's warmest month.
Avg high
38°C
100°F
Avg low
25°C
76°F
Rainfall
66 mm
some rain
Humidity
57%
relative
Sky
35%
cloud · a mix of sun and cloud
Austin weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 16°C / 61°F | 4°C / 38°F | 57 mm | 72% | 52% |
| February | 19°C / 66°F | 6°C / 43°F | 42 mm | 73% | 61% |
| March | 24°C / 74°F | 10°C / 51°F | 66 mm | 72% | 60% |
| April | 28°C / 82°F | 14°C / 57°F | 69 mm | 69% | 55% |
| May | 30°C / 87°F | 18°C / 65°F | 142 mm | 71% | 56% |
| June | 35°C / 94°F | 23°C / 73°F | 61 mm | 67% | 44% |
| July | 37°C / 98°F | 24°C / 75°F | 40 mm | 60% | 37% |
| August | 38°C / 100°F | 25°C / 76°F | 66 mm | 57% | 35% |
| September | 33°C / 92°F | 21°C / 71°F | 90 mm | 66% | 43% |
| October | 28°C / 83°F | 15°C / 60°F | 95 mm | 67% | 38% |
| November | 22°C / 71°F | 9°C / 49°F | 54 mm | 71% | 50% |
| December | 17°C / 63°F | 5°C / 42°F | 58 mm | 73% | 58% |
What to pack for August
- Light, breathable clothing (cotton or linen)
- A sun hat and high-SPF sunscreen
- A refillable water bottle
- An extra layer — evenings are noticeably cooler than afternoons
- A small travel umbrella, just in case
- Sunglasses
Is August a good time to visit Austin?
Compare the months in the chart above to find your ideal window.
Best time to visit Austin →Other United States cities in August
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Austin weather in August. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/austin/august
<a href="https://weathercompare.eu/weather/usa/austin/august">Austin weather in August</a> (WeatherCompare)
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Austin in August: quick answers
Is August a good time to visit Austin?
It can be, if you like heat: August highs in Austin are around 38°C. Good for the beach; plan sightseeing for early morning and evening.
How warm is Austin in August?
Average highs are about 38°C (100°F) and average lows about 25°C (76°F), based on 10 years of daily data.
Does it rain a lot in Austin in August?
Austin typically gets around 66 mm of rain in August — some rain.
Figures are long-term averages for the area around Austin (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.