May in Offenburg averages a daily high of 21°C with nights around 9.4°C. Expect roughly 15.1 wet days totalling 110.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Offenburg is June–September.
Based on OHLSBACH, GM (5.7km), 1995–2024. 26 years of May data.