December in Wuppertal averages a daily high of 6.3°C with nights around 1.5°C. Expect roughly 18.8 wet days totalling 117.5mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Wuppertal is May–September.
Based on WUPPERTAL BUCHENHOFEN, GM (4.5km), 1995–2024. 30 years of December data.