Merthyr Tydfil Weather Forecast

    • 15
    • 20

    Light rain

    • 13
    • 18

    Thunder

    • 12
    • 17

    Cloudy

    • 13
    • 18

    Light rain shower

    • 13
    • 18

    Heavy rain

    • 14
    • 18

    Partly cloudy

    • 14
    • 18

    Light rain

Today 29 Aug Wales

A cloudy and wet start with heavy spells of rain, clearing eastwards during the day. Turning brighter from the west during the afternoon with sunny spells and showers following. Maximum temperature 20 °C.

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Merthyr Tydfil Temperature Statistics

August Temperature

Sennybridge (38km)

  • Lowest 22 August, 2026

    1.9 °C

  • Average August

    15.8 °C

  • Highest 13 August, 2026

    31.8 °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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