December in Hachinohe averages a daily high of 5.4°C. Expect roughly 9.2 wet days totalling 61.2mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Hachinohe is May–October.
Based on HACHINOHE, JA (3.9km), 1995–2024. 25 years of December data.