September in Jiuquan averages a daily high of 23.4°C with nights around 8.8°C. Expect roughly 3.3 wet days totalling 13.8mm. 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. 23 years of September data.