Cardiff Weather Forecast

    • 16
    • 20

    Partly cloudy

    • 17
    • 23

    Cloudy

    • 14
    • 19

    Cloudy

    • 13
    • 18

    Partly cloudy

    • 13
    • 18

    Partly cloudy

    • 15
    • 18

    Cloudy

Today 5 Sep Wales

Any early showers should fade on Saturday morning to leave plenty of dry and bright weather with gentle winds. Some cloud arriving from the west later though, and staying fresher. Maximum temperature 20 °C.

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Cardiff Temperature Statistics

September Temperature

St-athan (19km)

  • Lowest 1 September, 2026

    13 °C

  • Average September

    17.6 °C

  • Highest 1 September, 2026

    20.1 °C

Climate (2021–2026)

St-athan (19km)

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  • Average Low 2021–2026

    9.1 °C

  • Average 2021–2026

    12 °C

  • Average High 2021–2026

    14.8 °C
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