September in Xucheng averages a daily high of 31.1°C with nights around 24.9°C. Expect roughly 13.2 wet days totalling 307.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Xucheng is November–March.
Based on HAIKOU, CH (37.7km), 1995–2024. 21 years of September data.