September in Hitachi-Naka averages a daily high of 26.6°C. Expect roughly 11.9 wet days totalling 169.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Hitachi-Naka is April–June.
Based on MITO, JA (6.3km), 1995–2024. 20 years of September data.