September in Regensburg averages a daily high of 20.6°C with nights around 9.3°C. Expect roughly 10.9 wet days totalling 51.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Regensburg is May–September.
Based on REGENSBURG, GM (3.1km), 1995–2024. 30 years of September data.