In May, Hemel Hempstead typically sees daytime highs of 15.8°C and overnight lows around 7.2°C. Compared to the annual average high of 13.1°C, May runs +2.8°C.
May in Hemel Hempstead averages a daytime high of 15.8°C and an overnight low of 7.2°C.
May runs +2.8°C compared to Hemel Hempstead's annual average high of 13.1°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 15.8°C and cooler evenings around 7.2°C.