October in Kamisu averages a daily high of 21.6°C with nights around 16.9°C. Expect roughly 13.3 wet days totalling 260.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Kamisu is May–October.
Based on CHOSHI, JA (24.6km), 1995–2024. 16 years of October data.