In May, Plymouth typically sees daytime highs of 20.7°C and overnight lows around 7.9°C. Compared to the annual average high of 12.2°C, May runs +8.5°C.
May in Plymouth averages a daytime high of 20.7°C and an overnight low of 7.9°C.
May runs +8.5°C compared to Plymouth's annual average high of 12.2°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 20.7°C and cooler evenings around 7.9°C.