December in Miyakonojō averages a daily high of 14°C. Expect roughly 7.1 wet days totalling 69.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Miyakonojō is April–May.
Based on MIYAKONOJO, JA (1.5km), 1995–2024. 29 years of December data.