December in Kagoshima averages a daily high of 15.5°C. Expect roughly 10.3 wet days totalling 109.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Kagoshima is April–May.
Based on KAGOSHIMA, JA (1.9km), 1995–2024. 22 years of December data.