Merthyr Tydfil Weather Forecast

    • 6
    • 12

    Heavy rain shower

    • 4
    • 11

    Heavy rain shower

    • 3
    • 12

    Partly cloudy

    • 7
    • 12

    Cloudy

    • 6
    • 13

    Light rain shower

    • 9
    • 13

    Cloudy

    • 10
    • 14

    Light rain

Today 13 May Wales

A day of sunshine and blustery showers, some of the showers heavy with the added risk of hail in places. Chilly, with temperatures below average. Windy for many. Maximum temperature 13 °C.

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Merthyr Tydfil Temperature Statistics

May Temperature

Sennybridge (38km)

  • Lowest 11 May, 2026

    -1 °C

  • Average May

    9 °C

  • Highest 9 May, 2026

    16.6 °C

Climate (2021–Present)

Sennybridge (38km)

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  • Average Low 2021–2026

    5.7 °C

  • Average 2021–2026

    9.3 °C

  • Average High 2021–2026

    12.8 °C
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