In May, Plymouth typically sees daytime highs of 14.9°C and overnight lows around 7.6°C. Compared to the annual average high of 13.4°C, May runs +1.5°C.
May in Plymouth averages a daytime high of 14.9°C and an overnight low of 7.6°C.
May runs +1.5°C compared to Plymouth's annual average high of 13.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 14.9°C and cooler evenings around 7.6°C.