In May, Helong typically sees daytime highs of 17.7°C and overnight lows around 3.8°C. Compared to the annual average high of 8.6°C, May runs +9.1°C.
May in Helong averages a daytime high of 17.7°C and an overnight low of 3.8°C.
May runs +9.1°C compared to Helong's annual average high of 8.6°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 17.7°C and cooler evenings around 3.8°C.