December in Dongtai averages a daily high of 9.4°C with nights around 0.7°C. Expect roughly 5.8 wet days totalling 32.4mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Dongtai is April–May.
Based on DONGTAI, CH (2.5km), 1995–2024. 26 years of December data.