Llanystumdwy Weather Forecast

    • 10
    • 21

    Sunny day

    • 8
    • 19

    Partly cloudy

    • 7
    • 17

    Light rain shower

    • 7
    • 18

    Sunny day

    • 8
    • 16

    Sunny day

    • 10
    • 15

    Cloudy

Today 18 May Wales

Early mist and low cloud will soon lift and burn away to give another fine and dry day with plenty of sunny spells. Feeling warm in the sunshine with light winds and high UV levels. Maximum Temperature 22C.

Tonight 18 May Wales

A fine end to the day, with evening sunshine. Staying dry with clear skies overnight. Chance of some low cloud developing by dawn. Locally chilly in rural spots. Light winds. Minimum Temperature 2C.

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Llanystumdwy Temperature Statistics

May Temperature

Capel Curig Saws (29km)

  • Lowest 6 May, 2025

    0.5 °C

  • Average May

    11.2 °C

  • Highest 1 May, 2025

    23.2 °C

Climate (2020–Present)

Capel Curig Saws (29km)

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  • Average Low 2020–2025

    6.7 °C

  • Average 2020–2025

    9.7 °C

  • Average High 2020–2025

    12.6 °C
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