December in Tongliao averages a daily high of -4.8°C with nights around -15.6°C. Rain is rare — about 1.5 wet days and 2.3mm across the month. A hard month to visit for comfort alone.
Across the year, the best time to visit Tongliao is April–May.
Based on TONGLIAO, CH (1.4km), 1995–2024. 26 years of December data.