St Donat's Bay Weather Forecast

    • 10
    • 19

    Light rain

    • 13
    • 18

    Cloudy

    • 17
    • 21

    Cloudy

    • 14
    • 19

    Light rain shower

    • 13
    • 17

    Light rain shower

    • 13
    • 18

    Partly cloudy

Today 27 Sep Wales

A dry but largely cloudy start on Sunday. Heavy and persistent rain will arrive later, with strengthening winds. Mild but feeling cooler in the rain. Maximum temperature 21 °C.

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St Donat's Bay Temperature Statistics

September Temperature

St-athan (6km)

  • Lowest 26 September, 2026

    8.9 °C

  • Average September

    16.5 °C

  • Highest 6 September, 2026

    25.1 °C

Climate (2021–2026)

St-athan (6km)

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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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