August in Jiayuguan averages a daily high of 28.8°C with nights around 13.9°C. Expect roughly 4.6 wet days totalling 13.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Jiayuguan is April–June.
Based on JIUQUAN, CH (17.5km), 1995–2024. 24 years of August data.