Sizewell Weather Forecast

    • 16
    • 22

    Cloudy

    • 15
    • 22

    Partly cloudy

    • 12
    • 20

    Light rain shower

    • 10
    • 15

    Cloudy

    • 10
    • 15

    Partly cloudy

    • 11
    • 15

    Sunny day

Today 18 Sep East of England

Mainly dry with plenty of low cloud at first. The cloud slowly lifting through the morning to leave some brighter spells later on. Gusty winds developing, particularly along the coast. Maximum Temperature 23C.

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Sizewell Temperature Statistics

September Temperature

Wattisham (46km)

  • Lowest 9 September, 2025

    7.5 °C

  • Average September

    15 °C

  • Highest 7 September, 2025

    23.3 °C

Climate (2020–Present)

Wattisham (46km)

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  • Average Low 2020–2025

    7.2 °C

  • Average 2020–2025

    10.9 °C

  • Average High 2020–2025

    14.6 °C
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