Portsmouth Weather Forecast

    • 8
    • 16

    Cloudy

    • 7
    • 13

    Cloudy

    • 8
    • 12

    Cloudy

    • 10
    • 12

    Light rain

    • 9
    • 13

    Cloudy

    • 7
    • 12

    Cloudy

Today 31 Mar London and South East England

A rather cloudy start, with some patchy light rain or drizzle. Cloud lifting and breaking through the afternoon, with sunny intervals and showers. Noticeably milder with just a gentle breeze. Maximum temperature 16 °C.

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Portsmouth Temperature Statistics

March Temperature

Thorney Island (11km)

  • Lowest 15 March, 2026

    0.1 °C

  • Average March

    8.8 °C

  • Highest 19 March, 2026

    16.9 °C

Climate (2021–Present)

Thorney Island (11km)

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  • Average Low 2021–2026

    8.8 °C

  • Average 2021–2026

    12.1 °C

  • Average High 2021–2026

    15.2 °C
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