Staines Reservoir Weather Forecast

    • 14
    • 22

    Partly cloudy

    • 17
    • 25

    Partly cloudy

    • 18
    • 28

    Sunny day

    • 20
    • 30

    Sunny day

    • 19
    • 31

    Sunny day

    • 14
    • 27

    Sunny day

    • 13
    • 24

    Sunny day

Today 21 May London and South East England

A dry day with any early cloud clearing to give plenty of sunny spells. Becoming warm or very warm, especially away from southern coasts. Light winds. Maximum temperature 24 °C.

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Staines Reservoir Temperature Statistics

May Temperature

Heathrow (4km)

  • Lowest 12 May, 2026

    3 °C

  • Average May

    12.3 °C

  • Highest 1 May, 2026

    25.3 °C

Climate (2021–Present)

Heathrow (4km)

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  • Average Low 2021–2026

    8.8 °C

  • Average 2021–2026

    12.4 °C

  • Average High 2021–2026

    16.3 °C
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