Portsmouth Harbour - Burrow Island Weather Forecast

    • 16
    • 26

    Partly cloudy

    • 16
    • 24

    Sunny day

    • 16
    • 23

    Sunny day

    • 17
    • 23

    Sunny day

    • 16
    • 24

    Partly cloudy

    • 17
    • 22

    Sunny day

Today 18 Jul London and South East England

A cloudier start but quickly breaking through the morning. Cooler than recent days but remaining fine for most with a low risk of isolated showers developing later. Light winds. Maximum temperature 25 °C.

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Portsmouth Harbour - Burrow Island Temperature Statistics

July Temperature

Thorney Island (14km)

  • Lowest 3 July, 2026

    11.6 °C

  • Average July

    21.6 °C

  • Highest 10 July, 2026

    30.8 °C

Climate (2021–2026)

Thorney Island (14km)

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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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