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December in Onomichi averages a daily high of 12°C. Expect roughly 7 wet days totalling 45.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Onomichi is April–May.
Based on FUKUYAMA, JA (5.9km), 1995–2024. 29 years of December data.
See all twelve months for Onomichi →