Portsmouth Harbour - Burrow Island Weather Forecast

    • 14
    • 19

    Sunny day

    • 15
    • 20

    Partly cloudy

    • 15
    • 22

    Sunny day

    • 15
    • 21

    Mist

    • 16
    • 22

    Sunny day

    • 14
    • 23

    Sunny day

    • 13
    • 20

    Sunny day

Today 21 May London and South East England

A dry day with any early cloud clearing to give plenty of sunny spells. Becoming warm or very warm, especially away from southern coasts. Light winds. Maximum temperature 24 °C.

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Portsmouth Harbour - Burrow Island Temperature Statistics

May Temperature

Thorney Island (14km)

  • Lowest 12 May, 2026

    2 °C

  • Average May

    11.8 °C

  • Highest 9 May, 2026

    21.2 °C

Climate (2021–Present)

Thorney Island (14km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    12.2 °C

  • Average High 2021–2026

    15.3 °C
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