May in Hailun averages a daily high of 20.5°C with nights around 7.3°C. Expect roughly 10.1 wet days totalling 47.1mm. 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. 24 years of May data.