Portsmouth Harbour - Burrow Island Weather Forecast

    • 15
    • 16

    Overcast

    • 14
    • 18

    Overcast

    • 12
    • 20

    Sunny day

    • 14
    • 19

    Partly cloudy

    • 14
    • 18

    Cloudy

    • 15
    • 19

    Cloudy

    • 15
    • 18

    Partly cloudy

Today 11 Jun London and South East England

A mostly dry, but cloudy start, before outbreaks of rain, locally heavy, spread eastwards across all parts during the morning. Winds light initially but becoming breezy at times during the afternoon. Feeling humid, particularly through the afternoon. Maximum temperature 17 °C.

Tonight 11 Jun London and South East England

Rain will mostly clear eastwards early in the evening, although remaining cloudy for much of the night with perhaps a few drizzly patches at times. Mostly mild. Minimum temperature 14 °C.

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Portsmouth Harbour - Burrow Island Temperature Statistics

June Temperature

Thorney Island (14km)

  • Lowest 9 June, 2026

    9.7 °C

  • Average June

    14.5 °C

  • Highest 2 June, 2026

    18.8 °C

Climate (2021–Present)

Thorney Island (14km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    12.2 °C

  • Average High 2021–2026

    15.3 °C
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