Porton Down Weather Forecast

    • 17
    • 26

    Partly cloudy

    • 16
    • 25

    Cloudy

    • 14
    • 21

    Thunder shower

    • 15
    • 22

    Light rain shower

    • 14
    • 21

    Light rain shower

    • 14
    • 22

    Light rain shower

    • 14
    • 23

    Partly cloudy

Today 18 Jul South West England

Mainly cloudy in the west at first with patchy rain gradually easing as it spreads eastwards. Brighter later, and in the east, with lengthy spells of sunshine for many in the afternoon. Feeling warm and muggy with light winds. Maximum Temperature 24C.

Tonight 18 Jul South West England

Some late sunshine for many before skies turn cloudier through the night with sea fog developing along the south coast. Mainly dry but feeling warm and muggy for all. Minimum Temperature 13C.

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Porton Down Temperature Statistics

July Temperature

Boscombe Down (4km)

  • Lowest 3 July, 2025

    8.8 °C

  • Average July

    19.5 °C

  • Highest 1 July, 2025

    30.9 °C

Climate (2020–Present)

Boscombe Down (4km)

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  • Average Low 2020–2025

    7.2 °C

  • Average 2020–2025

    11 °C

  • Average High 2020–2025

    14.9 °C
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