In May, Haarlem typically sees daytime highs of 15.1°C and overnight lows around 7.7°C. Compared to the annual average high of 12.5°C, May runs +2.6°C.
May in Haarlem averages a daytime high of 15.1°C and an overnight low of 7.7°C.
May runs +2.6°C compared to Haarlem's annual average high of 12.5°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 15.1°C and cooler evenings around 7.7°C.