Downs Weather Forecast

    • 17
    • 18

    Heavy rain

    • 15
    • 20

    Cloudy

    • 15
    • 19

    Cloudy

    • 11
    • 17

    Heavy rain

    • 9
    • 14

    Light rain shower

    • 9
    • 15

    Sunny day

    • 10
    • 15

    Partly cloudy

Today 17 Sep Wales

Heaviest and most persistent rain clearing eastwards through the morning, though remaining cloudy with outbreaks of patchy rain and drizzle throughout the day, turning heavy at times over the hills. Breezy. Maximum Temperature 19C.

Tonight 17 Sep Wales

Rain persisting throughout this evening and overnight, this turning heavy at times especially over the hills and mountains. Windy for all, especially along the coasts, and feeling humid. Minimum Temperature 8C.

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Downs Temperature Statistics

September Temperature

St-athan (12km)

  • Lowest 14 September, 2025

    10.1 °C

  • Average September

    15.6 °C

  • Highest 6 September, 2025

    22 °C

Climate (2020–Present)

St-athan (12km)

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  • Average Low 2020–2025

    8.8 °C

  • Average 2020–2025

    11.6 °C

  • Average High 2020–2025

    14.5 °C
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