Lower Cwm Weather Forecast

    • 8
    • 9

    Light rain

    • 6
    • 11

    Heavy rain

    • 5
    • 9

    Partly cloudy

    • 3
    • 9

    Light rain

    • 3
    • 7

    Cloudy

    • 3
    • 7

    Overcast

Today 17 Dec Wales

A wet and windy day as a band of prolonged rain spreads eastwards, bringing heavy downpours. Coastal gales likely with travel disruption and localised flooding possible. Maximum Temperature 10C.

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Lower Cwm Temperature Statistics

December Temperature

St-athan (42km)

  • Lowest 5 December, 2025

    1.8 °C

  • Average December

    9.8 °C

  • Highest 9 December, 2025

    15.2 °C

Climate (2020–Present)

St-athan (42km)

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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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