January in Hitachi-Naka averages a daily high of 9.3°C. Expect roughly 4.7 wet days totalling 39.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Hitachi-Naka is April–June.
Based on MITO, JA (6.3km), 1995–2024. 23 years of January data.