Trelystan Weather Forecast

    • 3
    • 12

    Cloudy

    • 4
    • 6

    Light rain shower

    • 6
    • 9

    Light rain

    • 5
    • 12

    Cloudy

    • 5
    • 7

    Cloudy

    • 7
    • 10

    Cloudy

Today 18 Dec Wales

Mild with showers for many, particularly through the morning, though some drier spells inland later. Widely cloudy though, with a band of rain arriving from the west by the evening. Maximum Temperature 12C.

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Trelystan Temperature Statistics

December Temperature

Lake Vyrnwy Saws (28km)

  • Lowest 11 December, 2024

    1.6 °C

  • Average December

    5.3 °C

  • Highest 1 December, 2024

    11.7 °C

Climate (2019–Present)

Lake Vyrnwy Saws (28km)

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  • Average Low 2019–2024

    6.1 °C

  • Average 2019–2024

    8.8 °C

  • Average High 2019–2024

    11.7 °C
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