In May, Hyesan typically sees daytime highs of 18.1°C and overnight lows around 2.8°C. Compared to the annual average high of 9.3°C, May runs +8.8°C.
May in Hyesan averages a daytime high of 18.1°C and an overnight low of 2.8°C.
May runs +8.8°C compared to Hyesan's annual average high of 9.3°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 18.1°C and cooler evenings around 2.8°C.