December in Suyangshan averages a daily high of 7.9°C with nights around -1.3°C. Expect roughly 3.6 wet days totalling 16mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Suyangshan is April–May.
Based on XUZHOU, CH (56.9km), 1995–2024. 26 years of December data.