December in Minami-Alps averages a daily high of 11.6°C. Expect roughly 4.9 wet days totalling 42.9mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Minami-Alps is April–May.
Based on KOFU, JA (9.7km), 1995–2024. 25 years of December data.