December in Bolzano averages a daily high of -1.3°C with nights around -5.9°C. Expect roughly 5.3 wet days totalling 43.2mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Bolzano is June–August.
Based on PAGANELLA, IT (44.6km), 1995–2024. 11 years of December data.