In May, Jeju City typically sees daytime highs of 20.6°C and overnight lows around 13.4°C. Compared to the annual average high of 18.2°C, May runs +2.4°C.
May in Jeju City averages a daytime high of 20.6°C and an overnight low of 13.4°C.
May runs +2.4°C compared to Jeju City's annual average high of 18.2°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 20.6°C and cooler evenings around 13.4°C.