Merthyr Tydfil Weather Forecast

    • 15
    • 28

    Sunny day

    • 13
    • 23

    Cloudy

    • 10
    • 19

    Partly cloudy

    • 12
    • 18

    Cloudy

    • 12
    • 16

    Light rain

    • 12
    • 17

    Heavy rain

Today 27 May Wales

Another dry and sunny day, although there is a small chance of the odd shower developing in the south. Not as hot but still feeling very warm. Maximum temperature 29 °C.

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Merthyr Tydfil Temperature Statistics

May Temperature

Sennybridge (38km)

  • Lowest 11 May, 2026

    -1 °C

  • Average May

    10.1 °C

  • Highest 24 May, 2026

    25.3 °C

Climate (2021–Present)

Sennybridge (38km)

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  • Average Low 2021–2026

    5.7 °C

  • Average 2021–2026

    9.4 °C

  • Average High 2021–2026

    12.8 °C
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