September in Gamagōri averages a daily high of 28.3°C. Expect roughly 12.7 wet days totalling 247.8mm. 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 September data.