March in Hiroshima averages a daily high of 14.6°C. Expect roughly 10.3 wet days totalling 111.1mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Hiroshima is April–May.
Based on HIROSHIMA, JA (1.6km), 1995–2024. 22 years of March data.