Portsmouth Weather Forecast

    • 15
    • 23

    Sunny day

    • 16
    • 21

    Sunny day

    • 12
    • 17

    Light rain shower

    • 9
    • 15

    Light rain shower

    • 8
    • 15

    Partly cloudy

Today 21 Sep London and South East England

Quite a dull start to the day with some locally dense mist and fog patches which will thin fairly slowly this morning, however all parts will see plenty of warm sunshine through the afternoon as winds remain light. Maximum Temperature 26C.

Tonight 21 Sep London and South East England

Mist and fog patches returning overnight, quite dense in favoured rural locations. Turning quite chilly where any clear spells persist before the fog forms. Winds remaining light. Minimum Temperature 7C.

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Portsmouth Temperature Statistics

September Temperature

Thorney Island (6.8 miles)

  • Lowest 11 September, 2020

    7.6 °C

  • Average September

    16.5 °C

  • Highest 15 September, 2020

    26.6 °C

Climate (2011–Present)

Thorney Island (6.8 miles)

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  • Average Low 2011–Present

    8.2 °C

  • Average 2011–Present

    11.6 °C

  • Average High 2011–Present

    14.9 °C
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