December in Tongzhou averages a daily high of 3.5°C with nights around -5.1°C. Rain is rare — about 1.4 wet days and 3mm across the month. A hard month to visit for comfort alone.
Across the year, the best time to visit Tongzhou is April–May.
Based on BEIJING, CH (32.5km), 1995–2024. 18 years of December data.