Portland Weather Forecast

    • 14
    • 15

    Cloudy

    • 14
    • 16

    Heavy rain

    • 13
    • 15

    Light rain shower

    • 12
    • 15

    Partly cloudy

    • 12
    • 15

    Heavy rain

    • 11
    • 14

    Light rain shower

    • 9
    • 13

    Partly cloudy

Today 18 Oct South West England

Mainly dry today with bright spells developing and perhaps lengthier periods of hazy sunshine for a time. Thicker cloud arriving later with a few showery outbreaks of rain in the west by this evening. Breezy. Maximum Temperature 14C.

Tonight 18 Oct South West England

South-easterly winds freshening this evening with showery outbreaks moving eastwards. Turning increasingly wet and windy overnight with some heavy and persistent rain by dawn. Coastal gales possible at times. Mild. Minimum Temperature 10C.

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Portland Temperature Statistics

October Temperature

Isle Of Portland (5km)

  • Lowest 9 October, 2025

    10.6 °C

  • Average October

    14 °C

  • Highest 1 October, 2025

    17.9 °C

Climate (2020–Present)

Isle Of Portland (5km)

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  • Average Low 2020–2025

    10.3 °C

  • Average 2020–2025

    12.1 °C

  • Average High 2020–2025

    14 °C
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