Heathrow Airport Weather Forecast

    • 14
    • 25

    Cloudy

    • 11
    • 23

    Partly cloudy

    • 12
    • 21

    Partly cloudy

    • 14
    • 22

    Cloudy

    • 13
    • 23

    Cloudy

    • 15
    • 23

    Cloudy

Today 7 Sep London and South East England

A widely dry and bright start. Probably cloudier with an increased chance of showers from late-morning to late-afternoon but still very warm. Rain spreading eastwards overnight into Tuesday. Maximum temperature 25 °C.

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Heathrow Airport Temperature Statistics

September Temperature

Heathrow (0km)

  • Lowest 5 September, 2026

    11.8 °C

  • Average September

    18.7 °C

  • Highest 3 September, 2026

    27.5 °C

Climate (2021–2026)

Heathrow (0km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    12.7 °C

  • Average High 2021–2026

    16.6 °C
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