Tonmawr Weather Forecast

    • 5
    • 7

    Light rain

    • 4
    • 8

    Light rain

    • 1
    • 6

    Light rain

    • 6
    • 7

    Light rain

    • 4
    • 8

    Light rain shower

    • 6
    • 9

    Overcast

Today 2 Dec Wales

A brighter start for many, though scattered showers continue in the west. These becoming more frequent and widespread through the afternoon, with blustery and perhaps thundery downpours likely. Maximum Temperature 10C.

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Tonmawr Temperature Statistics

December Temperature

St-athan (34km)

  • Lowest 1 December, 2025

    8.9 °C

  • Average December

    10.4 °C

  • Highest 1 December, 2025

    12 °C

Climate (2020–Present)

St-athan (34km)

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  • Average Low 2020–2025

    8.8 °C

  • Average 2020–2025

    11.7 °C

  • Average High 2020–2025

    14.5 °C
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