Portland Harbour Weather Forecast

    • 2
    • 6

    Partly cloudy

    • 9
    • 10

    Heavy rain

    • 10
    • 11

    Light rain shower

    • 5
    • 11

    Light rain

    • 8
    • 9

    Overcast

    • 8
    • 10

    Heavy rain

Today 10 Jan South West England

Most likely a dry start on Thursday. Then an increasing risk of heavy rain, along with strong winds, which may linger into Friday. Sunshine and showers following on Saturday.

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Portland Harbour Temperature Statistics

January Temperature

Isle Of Portland (6km)

  • Lowest 5 January, 2026

    0.3 °C

  • Average January

    5.3 °C

  • Highest 8 January, 2026

    10.3 °C

Climate (2021–Present)

Isle Of Portland (6km)

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  • Average Low 2021–2026

    10.3 °C

  • Average 2021–2026

    12.2 °C

  • Average High 2021–2026

    14.1 °C
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