September in Heyuan averages a daily high of 32.5°C with nights around 23.8°C. Expect roughly 9.9 wet days totalling 123.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Heyuan is November–December.
Based on HEYUAN, CH (9km), 1995–2024. 23 years of September data.