Portsmouth Harbour - Haslar Marina Weather Forecast

    • 7
    • 13

    Partly cloudy

    • 8
    • 14

    Cloudy

    • 9
    • 11

    Sunny day

    • 7
    • 11

    Sunny day

    • 6
    • 10

    Cloudy

    • 7
    • 10

    Sunny day

    • 8
    • 11

    Partly cloudy

Today 2 Mar London and South East England

Staying dry with variable amounts of cloud during Monday morning. However, increasing amounts of sunshine are likely to develop into the afternoon. Rather mild, with lighter winds. Maximum temperature 16 °C.

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Portsmouth Harbour - Haslar Marina Temperature Statistics

March Temperature

Thorney Island (14km)

  • Lowest 1 March, 2026

    8.7 °C

  • Average March

    8.9 °C

  • Highest 1 March, 2026

    9.4 °C

Climate (2021–Present)

Thorney Island (14km)

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  • Average Low 2021–2026

    8.7 °C

  • Average 2021–2026

    12 °C

  • Average High 2021–2026

    15.2 °C
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