In May, Horsham typically sees daytime highs of 16.4°C and overnight lows around 6.8°C. Compared to the annual average high of 13.7°C, May runs +2.7°C.
May in Horsham averages a daytime high of 16.4°C and an overnight low of 6.8°C.
May runs +2.7°C compared to Horsham's annual average high of 13.7°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 16.4°C and cooler evenings around 6.8°C.