Tongwynlais Weather Forecast

    • 14
    • 19

    Cloudy

    • 12
    • 18

    Partly cloudy

    • 12
    • 18

    Partly cloudy

    • 15
    • 18

    Cloudy

    • 14
    • 20

    Cloudy

    • 16
    • 18

    Light rain

    • 16
    • 19

    Cloudy

Today 7 Sep Wales

Any lingering rain quickly clearing, with bright or sunny spells developing throughout the morning. Turning cloudier in the afternoon with rain arriving. Feeling fresher with temperatures nearer to average. Maximum temperature 21 °C.

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Tongwynlais Temperature Statistics

September Temperature

St-athan (19km)

  • Lowest 5 September, 2026

    12.6 °C

  • Average September

    17 °C

  • Highest 3 September, 2026

    21 °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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