May in Jiuquan averages a daily high of 24.3°C with nights around 9.5°C. Expect roughly 3.5 wet days totalling 7.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Jiuquan is April–June.
Based on JIUQUAN, CH (4km), 1995–2024. 24 years of May data.