May in Wuppertal averages a daily high of 19.1°C with nights around 8.3°C. Expect roughly 13.4 wet days totalling 80.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Wuppertal is May–September.
Based on WUPPERTAL BUCHENHOFEN, GM (4.5km), 1995–2024. 30 years of May data.