Bontddu Weather Forecast

    • 13
    • 16

    Cloudy

    • 12
    • 14

    Cloudy

    • 15
    • 16

    Overcast

    • 13
    • 18

    Light rain

    • 9
    • 15

    Partly cloudy

    • 13
    • 16

    Cloudy

    • 11
    • 16

    Light rain

Today 19 Sep Wales

An increasingly dry day for most with sunny spells, but rain may affect the far south at times. Feeling warm in the sunshine with the brisk westerly winds gradually easing. Maximum temperature 21 °C.

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Bontddu Temperature Statistics

September Temperature

Lake Vyrnwy Saws (34km)

  • Lowest 12 September, 2026

    8.3 °C

  • Average September

    13.6 °C

  • Highest 6 September, 2026

    21.7 °C

Climate (2021–2026)

Lake Vyrnwy Saws (34km)

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  • Average Low 2021–2026

    6.4 °C

  • Average 2021–2026

    9.1 °C

  • Average High 2021–2026

    12 °C
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