December in Kawachi-Nagano averages a daily high of 12.4°C. Expect roughly 7.1 wet days totalling 58mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Kawachi-Nagano is April–June.
Based on OSAKA, JA (27.6km), 1995–2024. 22 years of December data.