December in Furukawa averages a daily high of 7.4°C. Expect roughly 7.3 wet days totalling 53mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Furukawa is May–October.
Based on ISHINOMAKI, JA (33.7km), 1995–2024. 27 years of December data.