Old St Mellons Weather Forecast

    • 16
    • 24

    Sunny day

    • 17
    • 28

    Sunny day

    • 20
    • 31

    Sunny day

    • 19
    • 29

    Sunny day

    • 16
    • 24

    Partly cloudy

    • 16
    • 22

    Partly cloudy

    • 16
    • 21

    Cloudy

Today 10 Aug Wales

Dry and settled to start the new week with light winds. Sunny spells for many, though these may turn hazy at times as areas of cloud drift through. Feeling warm where the sunshine emerges. Maximum temperature 24 °C.

Tonight 10 Aug Wales

Some late brightness to end Monday, then clear spells and variable cloud overnight. Staying dry throughout. Rather warm in urban areas but fresher in rural locations. Minimum temperature 6 °C.

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Old St Mellons Temperature Statistics

August Temperature

St-athan (26km)

  • Lowest 7 August, 2026

    9.6 °C

  • Average August

    17.9 °C

  • Highest 3 August, 2026

    27.5 °C

Climate (2021–2026)

St-athan (26km)

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  • Average Low 2021–2026

    9 °C

  • Average 2021–2026

    11.9 °C

  • Average High 2021–2026

    14.8 °C
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