Pontnewydd Weather Forecast

    • 13
    • 21

    Sunny day

    • 18
    • 20

    Cloudy

    • 17
    • 21

    Cloudy

    • 16
    • 21

    Light rain

    • 12
    • 19

    Sunny day

    • 14
    • 18

    Cloudy

    • 12
    • 18

    Partly cloudy

Today 11 Sep Wales

Isolated showers first thing on Friday morning, but these will soon fade as a ridge of high pressure builds in. This leaves brighter spells in the afternoon, especially in the west. Light winds and temperatures near average. Maximum temperature 20 °C.

Tonight 11 Sep Wales

Dry with clear spells initially. However, it will cloud over from the north after midnight. Strengthening southwesterly winds, with a risk coastal gales across Gwynedd and Anglesey later. Minimum temperature 8 °C.

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Pontnewydd Temperature Statistics

September Temperature

St-athan (40km)

  • Lowest 10 September, 2026

    10.1 °C

  • Average September

    16.5 °C

  • Highest 6 September, 2026

    25.1 °C

Climate (2021–2026)

St-athan (40km)

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  • Average Low 2021–2026

    9 °C

  • Average 2021–2026

    11.9 °C

  • Average High 2021–2026

    14.8 °C
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