In May, Muroran typically sees daytime highs of 15.0°C and overnight lows around 6.2°C. Compared to the annual average high of 11.4°C, May runs +3.6°C.
May in Muroran averages a daytime high of 15.0°C and an overnight low of 6.2°C.
May runs +3.6°C compared to Muroran's annual average high of 11.4°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 15.0°C and cooler evenings around 6.2°C.