In May, Heishan typically sees daytime highs of 23.7°C and overnight lows around 10.4°C. Compared to the annual average high of 14.2°C, May runs +9.5°C.
May in Heishan averages a daytime high of 23.7°C and an overnight low of 10.4°C.
May runs +9.5°C compared to Heishan's annual average high of 14.2°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 23.7°C and cooler evenings around 10.4°C.