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May in Niihama averages a daily high of 25°C. Expect roughly 10.9 wet days totalling 275.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Niihama is April–May.
Based on KOCHI, JA (49.3km), 1995–2024. 22 years of May data.
See all twelve months for Niihama →