Llantwit Major Weather Forecast

    • 16
    • 19

    Partly cloudy

    • 16
    • 19

    Light rain

    • 16
    • 19

    Cloudy

    • 14
    • 19

    Partly cloudy

    • 16
    • 21

    Sunny day

    • 16
    • 22

    Sunny day

Today 6 Aug Wales

Drier and warmer on Wednesday with plenty of sunshine, though hazy at times. Cloudier and breezier again on Thursday with patchy outbreaks of rain, followed by sunnier spells on Friday.

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Llantwit Major Temperature Statistics

August Temperature

St-athan (3km)

  • Lowest 2 August, 2025

    10.2 °C

  • Average August

    16.7 °C

  • Highest 3 August, 2025

    21.3 °C

Climate (2020–Present)

St-athan (3km)

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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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