In June, Southampton typically sees daytime highs of 18.7°C and overnight lows around 10.4°C. Compared to the annual average high of 13.4°C, June runs +5.3°C.
June in Southampton averages a daytime high of 18.7°C and an overnight low of 10.4°C.
June runs +5.3°C compared to Southampton's annual average high of 13.4°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 18.7°C and cooler evenings around 10.4°C.