Sully Island Weather Forecast

    • -1
    • 10

    Cloudy

    • 4
    • 5

    Partly cloudy

    • 5
    • 8

    Heavy rain

    • 6
    • 9

    Partly cloudy

    • 5
    • 8

    Light rain shower

    • 6
    • 8

    Cloudy

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Sully Island Temperature Statistics

January Temperature

St-athan (16km)

  • Lowest 5 January, 2026

    -2.4 °C

  • Average January

    4.2 °C

  • Highest 11 January, 2026

    11.4 °C

Climate (2021–Present)

St-athan (16km)

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  • Average Low 2021–2026

    8.8 °C

  • Average 2021–2026

    11.7 °C

  • Average High 2021–2026

    14.5 °C
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