September in Yongji averages a daily high of 26.8°C with nights around 16.7°C. Expect roughly 9 wet days totalling 94.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Yongji is March–May.
Based on YUNCHENG, CH (59.2km), 1995–2024. 23 years of September data.