December in Wolfenbüttel averages a daily high of 5°C with nights around 0.5°C. Expect roughly 15 wet days totalling 49.2mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Wolfenbüttel is May–September.
Based on BRAUNSCHWEIG, GM (15.4km), 1995–2024. 30 years of December data.