In May, Seosan typically sees daytime highs of 19.9°C and overnight lows around 11.3°C. Compared to the annual average high of 15.5°C, May runs +4.4°C.
May in Seosan averages a daytime high of 19.9°C and an overnight low of 11.3°C.
May runs +4.4°C compared to Seosan's annual average high of 15.5°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 19.9°C and cooler evenings around 11.3°C.