September in Linz averages a daily high of 20.1°C with nights around 10.8°C. Expect roughly 12.5 wet days totalling 97.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Linz is May–September.
Based on KREMSMUENSTER, AU (30.7km), 1995–2024. 30 years of September data.