December in Shizuoka averages a daily high of 14.2°C. Expect roughly 5.5 wet days totalling 86.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Shizuoka is April–June.
Based on SHIZUOKA, JA (1.5km), 1995–2024. 26 years of December data.