Llyn Cwellyn Weather Forecast

    • 18
    • 31

    Sunny day

    • 17
    • 25

    Partly cloudy

    • 12
    • 19

    Cloudy

    • 9
    • 17

    Cloudy

    • 12
    • 18

    Cloudy

    • 14
    • 19

    Heavy rain

    • 12
    • 18

    Light rain shower

Today 12 Aug Wales

Dry with lots of strong sunshine, temperatures rising rapidly during the morning. High level cloud will make the skies a little hazy at times. Feeling very warm and locally hot particularly across southeast Wales. Maximum temperature 34 °C.

Tonight 12 Aug Wales

Plenty of evening sunshine and then dry overnight with prolonged clear periods and variable cloud. Staying warm in urban areas with light winds. Minimum temperature 15 °C.

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Llyn Cwellyn Temperature Statistics

August Temperature

Capel Curig Saws (14km)

  • Lowest 11 August, 2026

    6.1 °C

  • Average August

    14.4 °C

  • Highest 3 August, 2026

    25.1 °C

Climate (2021–2026)

Capel Curig Saws (14km)

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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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