May in Regensburg averages a daily high of 20.8°C with nights around 8.2°C. Expect roughly 13.1 wet days totalling 68mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Regensburg is May–September.
Based on REGENSBURG, GM (3.1km), 1995–2024. 30 years of May data.