Southsea Castle Weather Forecast

    • 19
    • 24

    Sunny day

    • 22
    • 28

    Sunny day

    • 19
    • 26

    Sunny day

    • 18
    • 27

    Sunny day

    • 16
    • 25

    Partly cloudy

    • 17
    • 22

    Partly cloudy

    • 17
    • 23

    Partly cloudy

Today 11 Aug London and South East England

Another primarily sunny day with just a little wispy high cloud at times. Breezier than on Monday and feeling slightly cooler in some coastal regions. Otherwise, becoming very warm. Maximum temperature 27 °C.

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Southsea Castle Temperature Statistics

August Temperature

Thorney Island (12km)

  • Lowest 8 August, 2026

    10.6 °C

  • Average August

    19.8 °C

  • Highest 3 August, 2026

    30.3 °C

Climate (2021–2026)

Thorney Island (12km)

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  • Average Low 2021–2026

    9 °C

  • Average 2021–2026

    12.3 °C

  • Average High 2021–2026

    15.5 °C
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