In May, Southampton typically sees daytime highs of 15.7°C and overnight lows around 7.6°C. Compared to the annual average high of 13.4°C, May runs +2.2°C.
May in Southampton averages a daytime high of 15.7°C and an overnight low of 7.6°C.
May runs +2.2°C compared to Southampton's annual average high of 13.4°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 15.7°C and cooler evenings around 7.6°C.