Merthyr Tydfil Weather Forecast

    • 9
    • 17

    Partly cloudy

    • 12
    • 20

    Sunny day

    • 12
    • 19

    Partly cloudy

    • 7
    • 17

    Cloudy

    • 11
    • 17

    Partly cloudy

    • 11
    • 18

    Partly cloudy

    • 11
    • 17

    Cloudy

Today 20 Sep Wales

A fine day with a mixture of cloud and sunny spells, with some prolonged periods of sunshine developing in places. Much lighter winds than on Saturday and feeling pleasantly warm. Maximum temperature 19 °C.

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Merthyr Tydfil Temperature Statistics

September Temperature

Sennybridge (38km)

  • Lowest 10 September, 2026

    5.1 °C

  • Average September

    14.1 °C

  • Highest 6 September, 2026

    23.2 °C

Climate (2021–2026)

Sennybridge (38km)

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  • Average Low 2021–2026

    5.7 °C

  • Average 2021–2026

    9.5 °C

  • Average High 2021–2026

    13 °C
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