April in Lanzhou averages a daily high of 17.3°C with nights around 1.5°C. Expect roughly 7.2 wet days totalling 29.7mm. 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. 15 years of April data.