April in Helong averages a daily high of 15.5°C with nights around 0.9°C. Expect roughly 7 wet days totalling 28.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Helong is May.
Based on YANJI, CH (54.9km), 1995–2024. 25 years of April data.