Portsmouth Weather Forecast

    • 7
    • 14

    Overcast

    • 9
    • 14

    Cloudy

    • 7
    • 12

    Cloudy

    • 9
    • 12

    Cloudy

    • 7
    • 12

    Partly cloudy

    • 7
    • 11

    Cloudy

    • 7
    • 12

    Cloudy

Today 24 Mar London and South East England

A cloudy and misty start, gradually clearing away through the morning to give plenty of sunny spells through the afternoon and early evening. Light winds. Maximum Temperature 14C.

Tonight 24 Mar London and South East England

Dry with clear spells during the evening, which when coupled with light winds may lead to a slight local air frost and perhaps some fog patches developing towards dawn. Minimum Temperature -1C.

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Portsmouth Temperature Statistics

March Temperature

Thorney Island (11km)

  • Lowest 4 March, 2025

    -2.1 °C

  • Average March

    7.3 °C

  • Highest 20 March, 2025

    16.6 °C

Climate (2020–Present)

Thorney Island (11km)

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  • Average Low 2020–2025

    8.5 °C

  • Average 2020–2025

    11.8 °C

  • Average High 2020–2025

    15 °C
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