December in Tumxuk averages a daily high of 2.3°C with nights around -9.4°C. Rain is rare — about 0.6 wet days and 0.7mm across the month. A hard month to visit for comfort alone.
Across the year, the best time to visit Tumxuk is September–October.
Based on BACHU, CH (42.9km), 1995–2024. 26 years of December data.