February in Ōshū averages a daily high of 5.7°C. Expect roughly 7.6 wet days totalling 42.7mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Ōshū is May–June.
Based on OFUNATO, JA (48km), 1995–2024. 28 years of February data.