Merthyr Tydfil Weather Forecast

    • 0
    • 4

    Heavy rain

    • -1
    • 4

    Cloudy

    • -3
    • 4

    Partly cloudy

    • 6
    • 7

    Heavy rain

    • 7
    • 9

    Heavy rain shower

    • 5
    • 9

    Heavy rain

    • 5
    • 8

    Cloudy

Today 8 Jan Wales

Most likely a dry start Thursday. Then an increasing risk of heavy rain, sleet and some snow, along with strong winds, which may linger into Friday. Sunshine and showers Saturday.

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Merthyr Tydfil Temperature Statistics

January Temperature

Sennybridge (38km)

  • Lowest 5 January, 2026

    -9.5 °C

  • Average January

    -0.4 °C

  • Highest 1 January, 2026

    4.4 °C

Climate (2021–Present)

Sennybridge (38km)

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  • Average Low 2021–2026

    5.5 °C

  • Average 2021–2026

    9.2 °C

  • Average High 2021–2026

    12.7 °C
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