Portsmouth Weather Forecast

    • 13
    • 20

    Sunny day

    • 15
    • 20

    Sunny day

    • 15
    • 21

    Sunny day

    • 16
    • 21

    Sunny day

    • 16
    • 24

    Cloudy

Today 20 Aug London and South East England

A fine start to the day with plenty of sunshine once any early mist clears. Chance of an afternoon shower developing otherwise dry with plenty of sunshine to end the day. Winds remaining mainly light. Maximum Temperature 22C.

Tonight 20 Aug London and South East England

A dry start to the night with long clear spells at first and light winds. Perhaps more cloudy after midnight. Some mist and fog may form by dawn. Minimum Temperature 9C.

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Portsmouth Temperature Statistics

August Temperature

Thorney Island (6.8 miles)

  • Lowest 13 August, 2019

    10.8 °C

  • Average August

    17.4 °C

  • Highest 2 August, 2019

    24.2 °C

Climate (2011–Present)

Thorney Island (6.8 miles)

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  • Average Low 2011–Present

    8.1 °C

  • Average 2011–Present

    11.1 °C

  • Average High 2011–Present

    13.9 °C
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