Last updated: June 24, 2025
In Austin, United States, the average temperature in August hovers around 21°C (70°F), creating a pleasant climate for outdoor activities. However, temperatures can range from a cool 9°C (49°F) to a warm 35°C (95°F), so it's wise to dress accordingly. Expect 107 mm (4.2 in) of precipitation over approximately 10 days, contributing to an average humidity of 77%. Whether you're enjoying sunny days or occasional showers, this month has something for everyone!
In August in Austin, the average temperature is 21°C (70°F). Maximum temperatures can reach 35°C (95°F), while minimums can drop as low as 9°C (49°F). This weather makes Austin an ideal destination for travelers seeking both warmth and refreshing cooler evenings.
In Austin in August, the precipitation amount is 107 mm (4.2 in) accumulated over a period of 10 days.
In Austin in August, humidity is 77%. With an average temperature of 21°C (70°F), this humidity feels like a warm, slightly sticky embrace, making travel invigorating yet slightly uncomfortable as you navigate the vibrant streets and outdoor attractions.
In Austin in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Austin.
UV Risk Categories
Weather in Austin varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Austin, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -8°C (17°F) | 36 mm (1.4 inches) | 82% | moderate |
| February Weather | -9°C (17°F) | 46 mm (1.8 inches) | 84% | moderate |
| March Weather | 1°C (34°F) | 67 mm (2.6 inches) | 80% | moderate |
| April Weather | 7°C (44°F) | 85 mm (3.3 inches) | 81% | very high |
| May Weather | 15°C (59°F) | 148 mm (5.8 inches) | 74% | very high |
| June Weather | 22°C (71°F) | 134 mm (5.3 inches) | 80% | very high |
| July Weather | 23°C (73°F) | 98 mm (3.9 inches) | 80% | very high |
| August Weather | 21°C (70°F) | 107 mm (4.2 inches) | 77% | very high |
| September Weather | 18°C (64°F) | 121 mm (4.8 inches) | 75% | very high |
| October Weather | 9°C (49°F) | 104 mm (4.1 inches) | 80% | moderate |
| November Weather | 1°C (34°F) | 45 mm (1.8 inches) | 87% | moderate |
| December Weather | -4°C (25°F) | 37 mm (1.5 inches) | 83% | moderate |