April in Fukushima averages a daily high of 16.8°C. Expect roughly 11.3 wet days totalling 73.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Fukushima is May–June.
Based on YAMAGATA, JA (56.5km), 1995–2024. 27 years of April data.