Caernarfon Weather Forecast

    • 15
    • 21

    Partly cloudy

    • 14
    • 22

    Sunny day

    • 14
    • 25

    Sunny day

    • 14
    • 24

    Sunny day

    • 15
    • 23

    Partly cloudy

    • 16
    • 23

    Sunny day

Today 14 Aug Wales

Grey start for most with scattered showers, mostly light. Turning brighter and drier through the afternoon as cloud breaks and lifts. Feeling warm where the sunshine emerges. Maximum Temperature 24C.

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Caernarfon Temperature Statistics

August Temperature

Valley (21km)

  • Lowest 10 August, 2025

    10.6 °C

  • Average August

    17.3 °C

  • Highest 12 August, 2025

    29.2 °C

Climate (2020–Present)

Valley (21km)

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  • Average Low 2020–2025

    8.9 °C

  • Average 2020–2025

    11.4 °C

  • Average High 2020–2025

    13.7 °C
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