March in Yamaguchi averages a daily high of 15.1°C. Expect roughly 11.6 wet days totalling 131.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Yamaguchi is April–May.
Based on YAMAGUCHI, JA (2.4km), 1995–2024. 28 years of March data.