Claerwen Reservoir Weather Forecast

    • 11
    • 20

    Sunny day

    • 10
    • 18

    Cloudy

    • 9
    • 17

    Cloudy

    • 5
    • 16

    Partly cloudy

    • 5
    • 16

    Partly cloudy

    • 8
    • 16

    Cloudy

Today 17 Aug Wales

Any cloud lifting more quickly than on Saturday. Thereafter largely sunny with temperatures quickly rising in the strong sunshine. Turning very warm by the afternoon with a light easterly breeze. Maximum Temperature 27C.

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Claerwen Reservoir Temperature Statistics

August Temperature

Trawsgoed (19km)

  • Lowest 6 August, 2025

    6.6 °C

  • Average August

    16.7 °C

  • Highest 12 August, 2025

    31.1 °C

Climate (2020–Present)

Trawsgoed (19km)

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  • Average Low 2020–2025

    6.8 °C

  • Average 2020–2025

    10.8 °C

  • Average High 2020–2025

    14.3 °C
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