August in Lanzhou averages a daily high of 26.3°C with nights around 12.2°C. Expect roughly 11.2 wet days totalling 93.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Lanzhou is April–September.
Based on YU ZHONG, CH (35km), 1995–2024. 14 years of August data.