May in Austin averages a daily high of 30.8°C with nights around 19.6°C. Expect roughly 8.6 wet days totalling 126.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Austin is October–April.
Based on AUSTIN CAMP MABRY, TX US (6.2km), 1995–2024. 30 years of May data.