January in Ichinomiya averages a daily high of 9.1°C. Expect roughly 7.8 wet days totalling 52mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Ichinomiya is April–May.
Based on GIFU, JA (11.5km), 1995–2024. 28 years of January data.