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August in Hiroshima averages a daily high of 33°C. Expect roughly 9 wet days totalling 143.7mm. 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. 19 years of August data.
See all twelve months for Hiroshima →