Portland Weather Forecast

    • 17
    • 22

    Partly cloudy

    • 14
    • 20

    Partly cloudy

    • 16
    • 18

    Sunny day

    • 14
    • 18

    Sunny day

    • 12
    • 19

    Partly cloudy

    • 13
    • 19

    Sunny day

    • 13
    • 19

    Sunny day

Today 29 Sep South West England

A grey start with patchy light rain or drizzle. Turning brighter by lunchtime, especially in the east, with some sunshine. Rain returning to the far west later as winds strengthen. Feeling warm in the sunshine. Maximum temperature 24 °C.

Tonight 29 Sep South West England

Dry initially this evening in the east, but rain in the west will spread across the region. The rain heavy at times with strengthening winds, before clearing to showers later. Minimum temperature 12 °C.

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Portland Temperature Statistics

September Temperature

Isle Of Portland (5km)

  • Lowest 26 September, 2026

    12.2 °C

  • Average September

    17.3 °C

  • Highest 6 September, 2026

    21.6 °C

Climate (2021–2026)

Isle Of Portland (5km)

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  • Average Low 2021–2026

    10.6 °C

  • Average 2021–2026

    12.5 °C

  • Average High 2021–2026

    14.4 °C
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