Menai Strait - Castell-gwylan Weather Forecast

    • 12
    • 15

    Cloudy

    • 14
    • 16

    Cloudy

    • 14
    • 16

    Cloudy

    • 14
    • 16

    Cloudy

    • 12
    • 16

    Light rain

    • 11
    • 15

    Light rain shower

    • 12
    • 14

    Cloudy

Today 29 Sep Wales

A chilly start with patchy fog soon lifting and clearing, leaving plenty of sunny spells across the region. High cloud spilling in from the west will mask the sunshine later, however remaining dry and feeling warm in sheltered spots. Maximum Temperature 17C.

Tonight 29 Sep Wales

Cloud will continue to thicken overnight, with hill fog and a few drizzly outbreaks across the mountains. Chilly in rural parts with a touch of frost in the north. Minimum Temperature 1C.

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Menai Strait - Castell-gwylan Temperature Statistics

September Temperature

Capel Curig Saws (21km)

  • Lowest 24 September, 2025

    1.4 °C

  • Average September

    12 °C

  • Highest 7 September, 2025

    19.6 °C

Climate (2020–Present)

Capel Curig Saws (21km)

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  • Average Low 2020–2025

    6.7 °C

  • Average 2020–2025

    9.8 °C

  • Average High 2020–2025

    12.6 °C
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