Penarth Seafront Weather Forecast

    • 5
    • 10

    Partly cloudy

    • 9
    • 10

    Partly cloudy

    • 10
    • 11

    Cloudy

    • 8
    • 11

    Cloudy

    • 4
    • 10

    Cloudy

    • 8
    • 10

    Cloudy

Today 12 Dec Wales

Rain in the east gradually clearing during the morning to leave a dry and sunny day for many, though the odd shower may drift into western coasts. Winds lighter than of late but feeling fresher. Maximum Temperature 11C.

Tonight 12 Dec Wales

Isolated showers still possible along western coasts. Otherwise, dry overnight with lengthy clear periods and gentle winds. A chilly night with pockets of frost and fog developing. Minimum Temperature -1C.

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Penarth Seafront Temperature Statistics

December Temperature

St-athan (19km)

  • Lowest 5 December, 2025

    1.8 °C

  • Average December

    9.8 °C

  • Highest 9 December, 2025

    15.2 °C

Climate (2020–Present)

St-athan (19km)

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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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