June in Hyesan averages a daily high of 25.3°C with nights around 11°C. Expect roughly 17 wet days totalling 92.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Hyesan is May.
Based on HYESAN, KN (0.9km), 1995–2024. 24 years of June data.