December in Xinyang averages a daily high of 9.9°C with nights around 0.8°C. Expect roughly 5 wet days totalling 23.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Xinyang is April–May.
Based on XINYANG, CH (1.9km), 1995–2024. 26 years of December data.