Sarn Weather Forecast

    • 13
    • 16

    Cloudy

    • 17
    • 17

    Heavy rain

    • 16
    • 19

    Light rain

    • 15
    • 18

    Cloudy

    • 12
    • 17

    Light rain shower

    • 10
    • 15

    Partly cloudy

Today 16 Sep Wales

A drier day albeit still the chance of a few isolated showers. Sunny spells are likely through the morning, but any sunshine turning hazy through the afternoon. Still breezy. Maximum Temperature 17C.

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Sarn Temperature Statistics

September Temperature

St-athan (18km)

  • Lowest 14 September, 2025

    10.1 °C

  • Average September

    15.6 °C

  • Highest 6 September, 2025

    22 °C

Climate (2020–Present)

St-athan (18km)

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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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