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May in Koga averages a daily high of 25.3°C. Expect roughly 10.2 wet days totalling 107.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Koga is April–May.
Based on KUMAGAYA, JA (30.2km), 1995–2024. 24 years of May data.
See all twelve months for Koga →