May in Dunhuang averages a daily high of 28.1°C with nights around 11°C. Rain is rare — about 1.7 wet days and 6.5mm across the month. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Dunhuang is April–May.
Based on DUNHUANG, CH (1.9km), 1995–2024. 22 years of May data.