January in Mitoyo averages a daily high of 9.7°C. Expect roughly 6.3 wet days totalling 34.1mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Mitoyo is April–June.
Based on TADOTSU, JA (10.6km), 1995–2024. 28 years of January data.