Portsmouth Harbour - Haslar Marina Weather Forecast

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    • 28

    Sunny day

    • 16
    • 24

    Cloudy

    • 15
    • 23

    Sunny day

    • 17
    • 23

    Sunny day

    • 18
    • 23

    Cloudy

    • 18
    • 24

    Cloudy

Today 29 Jul London and South East England

A fine and bright start, leaving another dry and settled day across the region with a good deal of sunshine. Turning very hot in the afternoon, with light winds. Maximum temperature 35 °C.

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Portsmouth Harbour - Haslar Marina Temperature Statistics

July Temperature

Thorney Island (14km)

  • Lowest 20 July, 2026

    11.1 °C

  • Average July

    21 °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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