November in Nagaoka averages a daily high of 14.6°C. Expect roughly 18.4 wet days totalling 192.5mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Nagaoka is May–June.
Based on NIIGATA, JA (54.8km), 1995–2024. 21 years of November data.