In May, Iserlohn typically sees daytime highs of 16.9°C and overnight lows around 6.9°C. Compared to the annual average high of 12.5°C, May runs +4.4°C.
May in Iserlohn averages a daytime high of 16.9°C and an overnight low of 6.9°C.
May runs +4.4°C compared to Iserlohn's annual average high of 12.5°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 16.9°C and cooler evenings around 6.9°C.