April in Regensburg averages a daily high of 16.5°C with nights around 3.8°C. Expect roughly 10.4 wet days totalling 37.3mm. 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 April data.