Llanystumdwy Weather Forecast

    • 5
    • 10

    Cloudy

    • 11
    • 11

    Cloudy

    • 10
    • 11

    Heavy rain

    • 7
    • 11

    Heavy rain

    • 4
    • 9

    Partly cloudy

    • 9
    • 10

    Light rain

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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Llanystumdwy Temperature Statistics

December Temperature

Capel Curig Saws (29km)

  • Lowest 4 December, 2025

    3.1 °C

  • Average December

    8.6 °C

  • Highest 9 December, 2025

    15 °C

Climate (2020–Present)

Capel Curig Saws (29km)

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  • Average Low 2020–2025

    6.8 °C

  • Average 2020–2025

    9.8 °C

  • Average High 2020–2025

    12.7 °C
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