April in Hyesan-dong averages a daily high of 13.6°C with nights around -1.3°C. Expect roughly 10 wet days totalling 30.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Hyesan-dong is May.
Based on HYESAN, KN (1.8km), 1995–2024. 22 years of April data.