September in Jiangyan averages a daily high of 27.6°C with nights around 19.8°C. Expect roughly 7.1 wet days totalling 81mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Jiangyan is April–May.
Based on DONGTAI, CH (40.4km), 1995–2024. 23 years of September data.