September in Changtu averages a daily high of 23.4°C with nights around 11.1°C. Expect roughly 6.1 wet days totalling 46.7mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Changtu is May.
Based on SIPING, CH (48.9km), 1995–2024. 29 years of September data.