In June, Swansea typically sees daytime highs of 17.0°C and overnight lows around 10.9°C. Compared to the annual average high of 12.3°C, June runs +4.7°C.
June in Swansea averages a daytime high of 17.0°C and an overnight low of 10.9°C.
June runs +4.7°C compared to Swansea's annual average high of 12.3°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 17.0°C and cooler evenings around 10.9°C.