Portsmouth Harbour - Haslar Marina Weather Forecast

    • 13
    • 21

    Sunny day

    • 12
    • 20

    Partly cloudy

    • 14
    • 18

    Cloudy

    • 10
    • 15

    Light rain

    • 11
    • 15

    Sunny day

    • 13
    • 17

    Cloudy

    • 12
    • 16

    Partly cloudy

Today 4 Oct London and South East England

A cool start with mist and fog patches, clearing slowly through the morning. A dry day follows with cloud increasing from the northwest through the period. Temperatures remain above average. Maximum temperature 23 °C.

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Portsmouth Harbour - Haslar Marina Temperature Statistics

October Temperature

Thorney Island (14km)

  • Lowest 1 October, 2026

    12.9 °C

  • Average October

    13.9 °C

  • Highest 1 October, 2026

    15.2 °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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