September in Yongbei averages a daily high of 22°C with nights around 12.7°C. Expect roughly 18.7 wet days totalling 155.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Yongbei is March–April.
Based on LIJING, CH (37.4km), 1995–2024. 23 years of September data.