Treharris Weather Forecast

    • 16
    • 27

    Cloudy

    • 16
    • 22

    Light rain

    • 12
    • 20

    Light rain shower

    • 10
    • 19

    Partly cloudy

    • 11
    • 20

    Cloudy

    • 12
    • 21

    Partly cloudy

Today 3 Aug Wales

Dry, with clear or sunny spells, cloud increasing across the west at times making skies a little hazy. Feeling very warm and humid. Maximum temperature 26 °C.

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Treharris Temperature Statistics

August Temperature

St-athan (30km)

  • Lowest 2 August, 2026

    12 °C

  • Average August

    14.9 °C

  • Highest 1 August, 2026

    20 °C

Climate (2021–2026)

St-athan (30km)

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  • Average Low 2021–2026

    9 °C

  • Average 2021–2026

    11.9 °C

  • Average High 2021–2026

    14.7 °C
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