December in Dunhuang averages a daily high of 0.6°C with nights around -12.5°C. Rain is rare — about 1.1 wet days and 1.2mm across the month. A hard month to visit for comfort alone.
Across the year, the best time to visit Dunhuang is April–May.
Based on DUNHUANG, CH (1.9km), 1995–2024. 24 years of December data.