Chichester Harbour Entrance Weather Forecast

    • 18
    • 21

    Cloudy

    • 16
    • 21

    Cloudy

    • 16
    • 18

    Sunny day

    • 16
    • 18

    Cloudy

    • 16
    • 18

    Heavy rain shower

    • 15
    • 18

    Light rain shower

Today 6 Sep London and South East England

Dry with hazy sunshine on Saturday. Blustery winds on Sunday with outbreaks of rain expected. Windy on Monday with a mix of sunshine and isolated showers.

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Chichester Harbour Entrance Temperature Statistics

September Temperature

Thorney Island (3km)

  • Lowest 2 September, 2025

    14.5 °C

  • Average September

    17.3 °C

  • Highest 1 September, 2025

    20.2 °C

Climate (2020–Present)

Thorney Island (3km)

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  • Average Low 2020–2025

    8.6 °C

  • Average 2020–2025

    11.9 °C

  • Average High 2020–2025

    15.1 °C
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