Chesil Beach Weather Forecast

    • 8
    • 10

    Sunny day

    • 9
    • 10

    Cloudy

    • 6
    • 11

    Cloudy

    • 4
    • 8

    Overcast

    • 2
    • 5

    Overcast

    • 1
    • 4

    Overcast

    • 1
    • 4

    Partly cloudy

Today 20 Dec South West England

A largely fine day with sunny periods. Freshening southeasterly winds developing and turning windier in the west with some spells of rain in Cornwall during the afternoon. Feeling cooler. Maximum Temperature 11C.

Tonight 20 Dec South West England

Becoming cloudier overnight with some spots of rain. Winds mostly easing but still fairly breezy around exposed coasts. Not turning quite as chilly as previous nights. Minimum Temperature 6C.

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Chesil Beach Temperature Statistics

December Temperature

Isle Of Portland (12km)

  • Lowest 17 December, 2025

    5.8 °C

  • Average December

    10.9 °C

  • Highest 9 December, 2025

    14.1 °C

Climate (2020–Present)

Isle Of Portland (12km)

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  • Average Low 2020–2025

    10.3 °C

  • Average 2020–2025

    12.1 °C

  • Average High 2020–2025

    14.1 °C
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