In August, Shiojiri typically sees daytime highs of 27.6°C and overnight lows around 18.2°C. Compared to the annual average high of 14.4°C, August runs +13.2°C.
August in Shiojiri averages a daytime high of 27.6°C and an overnight low of 18.2°C.
August runs +13.2°C compared to Shiojiri's annual average high of 14.4°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 27.6°C and cooler evenings around 18.2°C.