Old St Mellons Weather Forecast

    • 7
    • 14

    Overcast

    • 5
    • 10

    Partly cloudy

    • 8
    • 13

    Partly cloudy

    • 9
    • 16

    Sunny day

    • 9
    • 15

    Sunny day

    • 7
    • 12

    Cloudy

Today 4 Apr Wales

Cloud and light patchy rain quickly spreading northwards, some brighter spells possible from afternoon onwards. Turning increasingly windy as Storm Dave arrives with gales developing from mid-afternoon. Maximum temperature 13 °C.

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Old St Mellons Temperature Statistics

April Temperature

St-athan (26km)

  • Lowest 2 April, 2026

    5.1 °C

  • Average April

    9.1 °C

  • Highest 1 April, 2026

    11.1 °C

Climate (2021–Present)

St-athan (26km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    11.7 °C

  • Average High 2021–2026

    14.6 °C
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