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May in Nagaoka averages a daily high of 21.9°C. Expect roughly 10.8 wet days totalling 101.2mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Nagaoka is May–June.
Based on NIIGATA, JA (54.8km), 1995–2024. 22 years of May data.
See all twelve months for Nagaoka →