December in Neu-Ulm averages a daily high of 3°C with nights around -3°C. Expect roughly 16.7 wet days totalling 75.7mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Neu-Ulm is June–September.
Based on MERKLINGEN, GM (22.5km), 1995–2024. 30 years of December data.