September in Donaustadt averages a daily high of 21.2°C with nights around 12.1°C. Expect roughly 9.4 wet days totalling 72.7mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Donaustadt is May–September.
Based on WIEN, AU (8.1km), 1995–2024. 30 years of September data.