April in Shimonoseki averages a daily high of 18.6°C. Expect roughly 10.2 wet days totalling 131.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Shimonoseki is May.
Based on SHIMONOSEKI, JA (0.7km), 1995–2024. 26 years of April data.