Sully Island Weather Forecast

    • 9
    • 16

    Partly cloudy

    • 10
    • 15

    Cloudy

    • 9
    • 14

    Cloudy

    • 9
    • 16

    Partly cloudy

    • 12
    • 18

    Cloudy

    • 12
    • 19

    Sunny day

Today 24 Apr Wales

Fog patches quickly clearing, then a dry day with sunny spells for many. Isolated showers developing, mainly this afternoon, but most places remaining dry. Sea breezes forming, but feeling warmer for most than on Wednesday. Maximum Temperature 16C.

Tonight 24 Apr Wales

A dry night for most with some low cloud, mist and fog forming. The chance of some patchy rain on western coasts. Chilly under any clear skies in eastern counties. Minimum Temperature 5C.

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Sully Island Temperature Statistics

April Temperature

St-athan (16km)

  • Lowest 17 April, 2025

    3.7 °C

  • Average April

    10.6 °C

  • Highest 4 April, 2025

    21.2 °C

Climate (2020–Present)

St-athan (16km)

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  • Average Low 2020–2025

    8.7 °C

  • Average 2020–2025

    11.5 °C

  • Average High 2020–2025

    14.4 °C
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