In May, Iwakuni typically sees daytime highs of 21.2°C and overnight lows around 13.3°C. Compared to the annual average high of 18.6°C, May runs +2.7°C.
May in Iwakuni averages a daytime high of 21.2°C and an overnight low of 13.3°C.
May runs +2.7°C compared to Iwakuni's annual average high of 18.6°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 21.2°C and cooler evenings around 13.3°C.