May in Zhangjiachuan averages a daily high of 25.3°C with nights around 11.5°C. Expect roughly 8.6 wet days totalling 56.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Zhangjiachuan is April–May.
Based on BEIDAO, CH (56.2km), 1995–2024. 19 years of May data.