In May, Shiojiri typically sees daytime highs of 19.1°C and overnight lows around 7.8°C. Compared to the annual average high of 14.4°C, May runs +4.7°C.
May in Shiojiri averages a daytime high of 19.1°C and an overnight low of 7.8°C.
May runs +4.7°C compared to Shiojiri's annual average high of 14.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 19.1°C and cooler evenings around 7.8°C.