September in Hefei averages a daily high of 28.2°C with nights around 20.2°C. Expect roughly 5.8 wet days totalling 55mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Hefei is April–May.
Based on HEFEI, CH (4.5km), 1995–2024. 23 years of September data.