In May, Koblenz typically sees daytime highs of 17.8°C and overnight lows around 7.0°C. Compared to the annual average high of 13.1°C, May runs +4.7°C.
May in Koblenz averages a daytime high of 17.8°C and an overnight low of 7.0°C.
May runs +4.7°C compared to Koblenz's annual average high of 13.1°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 17.8°C and cooler evenings around 7.0°C.