In May, Trondheim typically sees daytime highs of 13.6°C and overnight lows around 3.6°C. Compared to the annual average high of 8.4°C, May runs +5.2°C.
May in Trondheim averages a daytime high of 13.6°C and an overnight low of 3.6°C.
May runs +5.2°C compared to Trondheim's annual average high of 8.4°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 13.6°C and cooler evenings around 3.6°C.