In May, Skien typically sees daytime highs of 14.3°C and overnight lows around 5.7°C. Compared to the annual average high of 9.6°C, May runs +4.8°C.
May in Skien averages a daytime high of 14.3°C and an overnight low of 5.7°C.
May runs +4.8°C compared to Skien's annual average high of 9.6°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 14.3°C and cooler evenings around 5.7°C.