September in Tongzhou averages a daily high of 26.4°C with nights around 16.2°C. Expect roughly 6.3 wet days totalling 56.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Tongzhou is April–May.
Based on BEIJING, CH (32.5km), 1995–2024. 18 years of September data.