In May, Dortmund typically sees daytime highs of 17.9°C and overnight lows around 7.5°C. Compared to the annual average high of 13.6°C, May runs +4.3°C.
May in Dortmund averages a daytime high of 17.9°C and an overnight low of 7.5°C.
May runs +4.3°C compared to Dortmund's annual average high of 13.6°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 17.9°C and cooler evenings around 7.5°C.