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May in Saku averages a daily high of 19.7°C. Expect roughly 11.1 wet days totalling 113.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Saku is May–September.
Based on KARUIZAWA, JA (16km), 1995–2024. 25 years of May data.
See all twelve months for Saku →