September in Ichinomiya averages a daily high of 29.4°C. Expect roughly 12.4 wet days totalling 236.6mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Ichinomiya is April–May.
Based on GIFU, JA (11.5km), 1995–2024. 26 years of September data.