September in Haicheng averages a daily high of 24.6°C with nights around 15.2°C. Expect roughly 6.2 wet days totalling 51.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Haicheng is May–June.
Based on YINGKOU, CH (50.5km), 1995–2024. 23 years of September data.