Portsmouth Harbour - Burrow Island Weather Forecast

    • 15
    • 20

    Partly cloudy

    • 12
    • 20

    Cloudy

    • 16
    • 18

    Cloudy

    • 19
    • 21

    Cloudy

    • 17
    • 20

    Light rain shower

    • 14
    • 19

    Light rain shower

    • 14
    • 18

    Partly cloudy

Today 26 Sep London and South East England

Any lingering overnight cloud will soon clear to leave a fine and dry day with light winds and plenty of sunshine, though hazy at times. Feeling pleasantly warm. Maximum temperature 21 °C.

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Portsmouth Harbour - Burrow Island Temperature Statistics

September Temperature

Thorney Island (14km)

  • Lowest 21 September, 2026

    8.8 °C

  • Average September

    17.3 °C

  • Highest 3 September, 2026

    23.5 °C

Climate (2021–2026)

Thorney Island (14km)

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  • Average Low 2021–2026

    9 °C

  • Average 2021–2026

    12.4 °C

  • Average High 2021–2026

    15.6 °C
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