December in Narutochō-mitsuishi averages a daily high of 12.6°C. Expect roughly 6.4 wet days totalling 52.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Narutochō-mitsuishi is April–June.
Based on TOKUSHIMA, JA (15.2km), 1995–2024. 20 years of December data.