Southsea Castle Weather Forecast

    • 19
    • 26

    Partly cloudy

    • 14
    • 22

    Partly cloudy

    • 16
    • 20

    Cloudy

    • 15
    • 20

    Partly cloudy

    • 16
    • 22

    Sunny day

    • 15
    • 23

    Partly cloudy

Today 27 Jun London and South East England

Early showery rain and thunderstorms soon clearing eastwards. Becoming fine with further sunshine for a time, still hot, but markedly less so than Friday. Further showers and thunderstorms possible later. Maximum temperature 32 °C.

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Southsea Castle Temperature Statistics

June Temperature

Thorney Island (12km)

  • Lowest 11 June, 2026

    9 °C

  • Average June

    17.8 °C

  • Highest 24 June, 2026

    34.7 °C

Climate (2021–2026)

Thorney Island (12km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    12.2 °C

  • Average High 2021–2026

    15.4 °C
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