Portsmouth Harbour Entrance Weather Forecast

    • 19
    • 24

    Sunny day

    • 17
    • 22

    Sunny day

    • 18
    • 22

    Sunny day

    • 16
    • 22

    Partly cloudy

    • 16
    • 20

    Light rain shower

    • 17
    • 21

    Partly cloudy

Today 11 Jul London and South East England

Clear skies and prolonged sunshine throughout Friday. Feeling hot as light winds continue, although feeling slightly cooler along the coast once again. Chance of mist here. Maximum Temperature 32C.

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Portsmouth Harbour Entrance Temperature Statistics

July Temperature

Thorney Island (13km)

  • Lowest 3 July, 2025

    10.3 °C

  • Average July

    18.4 °C

  • Highest 1 July, 2025

    27.4 °C

Climate (2020–Present)

Thorney Island (13km)

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  • Average Low 2020–2025

    8.6 °C

  • Average 2020–2025

    11.9 °C

  • Average High 2020–2025

    15.1 °C
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