September in Hailun averages a daily high of 20.5°C with nights around 8.1°C. Expect roughly 7.5 wet days totalling 53.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Hailun is May.
Based on HAILUN, CH (3.5km), 1995–2024. 23 years of September data.