April in Kuroiso averages a daily high of 16.3°C. Expect roughly 10.6 wet days totalling 122.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Kuroiso is May–June.
Based on SHIRAKAWA, JA (23.7km), 1995–2024. 29 years of April data.