Portsmouth Harbour - Inner Weather Forecast

    • 13
    • 16

    Heavy rain

    • 13
    • 15

    Thunder

    • 11
    • 16

    Partly cloudy

    • 12
    • 15

    Cloudy

    • 11
    • 14

    Light rain shower

    • 8
    • 13

    Light rain shower

    • 7
    • 11

    Partly cloudy

Today 19 Oct London and South East England

After a dry and cloudy start, outbreaks of rain, locally heavy, will gradually spread eastwards across all parts during the afternoon. A freshening southerly wind developing, especially along coasts. Temperatures near normal. Maximum Temperature 16C.

Tonight 19 Oct London and South East England

Outbreaks of rain, locally heavy, will continue to slowly move eastwards across all parts during the first part of the night. Rain clearing shortly after midnight. Further showers following. Windy. Minimum Temperature 10C.

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Portsmouth Harbour - Inner Temperature Statistics

October Temperature

Thorney Island (13km)

  • Lowest 1 October, 2025

    7.3 °C

  • Average October

    13.3 °C

  • Highest 6 October, 2025

    18.4 °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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