Cwm Weather Forecast

    • 9
    • 19

    Partly cloudy

    • 11
    • 16

    Partly cloudy

    • 11
    • 17

    Light rain shower

    • 10
    • 17

    Partly cloudy

    • 10
    • 17

    Cloudy

    • 10
    • 17

    Sunny day

Today 30 Sep Wales

A day of sunshine and blustery showers, these turning heavy and thundery at times. A little cooler but still warm in the sunshine with winds also easing. Maximum temperature 22 °C.

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Cwm Temperature Statistics

September Temperature

St-athan (41km)

  • Lowest 26 September, 2026

    8.9 °C

  • Average September

    16.3 °C

  • Highest 6 September, 2026

    25.1 °C

Climate (2021–2026)

St-athan (41km)

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  • Average Low 2021–2026

    9.1 °C

  • Average 2021–2026

    12 °C

  • Average High 2021–2026

    14.8 °C
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