In January, Hachioji typically sees daytime highs of 8.9°C and overnight lows around -1.4°C. Compared to the annual average high of 19.2°C, January runs -10.3°C.
January in Hachioji averages a daytime high of 8.9°C and an overnight low of -1.4°C.
January runs -10.3°C compared to Hachioji's annual average high of 19.2°C, ranking #12 of 12 months by warmth.
Plan for daytime highs near 8.9°C and cooler evenings around -1.4°C.