Merthyr Mawr Beach Weather Forecast

    • 6
    • 15

    Partly cloudy

    • 7
    • 13

    Partly cloudy

    • 7
    • 12

    Cloudy

    • 8
    • 11

    Cloudy

    • 8
    • 11

    Cloudy

    • 7
    • 10

    Light rain shower

Today 20 Mar Wales

A chilly start with some mist and fog in places. Once this clears, there will be lots of warm sunshine to finish the working week. Maximum temperature 16 °C.

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Merthyr Mawr Beach Temperature Statistics

March Temperature

St-athan (16km)

  • Lowest 14 March, 2026

    2.6 °C

  • Average March

    8.8 °C

  • Highest 18 March, 2026

    17.9 °C

Climate (2021–2026)

St-athan (16km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    11.8 °C

  • Average High 2021–2026

    14.6 °C
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