Austin Weather in September

Thinking of visiting Austin in September? Expect very high temperatures reaching 33°C (91°F) during the day, dropping to 21°C (70°F) at night, and note that quite a bit of rainfall is likely.

Rainfall in Austin in September

Records from the past 30 years suggest around 8 days of rain, with 106 mm (4.2 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Austin in September

In September, Austin gets very high temperatures, with highs of 33°C (91°F). Nights cool to around 21°C (70°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. With overnight lows of 21°C (70°F), evenings stay pleasantly warm.

Sunshine in Austin in September

Enjoy a sunny month with about 234 hours of sunshine, the clear skies make Austin even more beautiful.

Wind Speed in Austin in September

Wind speeds average 3 m/s (6 knots) during September. At this speed, light breezes keep leaves and small twigs in gentle motion while the wind also provides natural cooling. Since this is an average, some days are more tranquil while others have more persistent light winds that are more noticeable.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. March, April and November typically offer the best weather for Austin.