In May, Karatsu typically sees daytime highs of 22.3°C and overnight lows around 14.7°C. Compared to the annual average high of 19.4°C, May runs +3.0°C.
May in Karatsu averages a daytime high of 22.3°C and an overnight low of 14.7°C.
May runs +3.0°C compared to Karatsu's annual average high of 19.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 22.3°C and cooler evenings around 14.7°C.