Portsmouth Harbour - Haslar Marina Weather Forecast

    • 14
    • 25

    Partly cloudy

    • 15
    • 22

    Sunny day

    • 16
    • 22

    Sunny day

    • 15
    • 22

    Partly cloudy

    • 16
    • 23

    Partly cloudy

    • 17
    • 24

    Partly cloudy

Today 2 Jul London and South East England

Thursday again mainly fine with some bright or sunny spells. Any patchy rain or showers clearing south-eastwards by late morning. Breezy by afternoon. Maximum temperature 25 °C.

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Portsmouth Harbour - Haslar Marina Temperature Statistics

July Temperature

Thorney Island (14km)

  • Lowest 1 July, 2026

    15.1 °C

  • Average July

    18.7 °C

  • Highest 1 July, 2026

    25 °C

Climate (2021–2026)

Thorney Island (14km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    12.2 °C

  • Average High 2021–2026

    15.4 °C
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