Llanystumdwy Weather Forecast

    • 8
    • 17

    Light rain

    • 11
    • 16

    Sunny day

    • 17
    • 21

    Cloudy

    • 13
    • 18

    Light rain shower

    • 13
    • 16

    Sunny day

    • 13
    • 17

    Light rain shower

    • 12
    • 17

    Cloudy

Today 27 Sep Wales

A dry but largely cloudy start on Sunday. Heavy and persistent rain will arrive from the southwest through the morning, with strengthening winds. Mild but feeling cooler in the rain. Maximum temperature 21 °C.

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Llanystumdwy Temperature Statistics

September Temperature

Capel Curig Saws (29km)

  • Lowest 24 September, 2026

    4.5 °C

  • Average September

    14.1 °C

  • Highest 6 September, 2026

    21.8 °C

Climate (2021–2026)

Capel Curig Saws (29km)

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  • Average Low 2021–2026

    7 °C

  • Average 2021–2026

    10 °C

  • Average High 2021–2026

    12.9 °C
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