December in Gamagōri averages a daily high of 11.9°C. Expect roughly 6.5 wet days totalling 68.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Gamagōri is April–June.
Based on IRAKO, JA (25.4km), 1995–2024. 27 years of December data.