Cynonville Weather Forecast

    • 21
    • 28

    Sunny day

    • 19
    • 29

    Sunny day

    • 15
    • 26

    Sunny day

    • 12
    • 21

    Partly cloudy

    • 10
    • 17

    Cloudy

    • 11
    • 18

    Cloudy

    • 12
    • 17

    Light rain

Today 25 May Wales

Hot and humid on bank holiday Monday, exceptionally so for late May, with widespread strong sunshine and light winds. Slightly fresher at the coast with a sea breeze. Maximum temperature 30 °C.

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Cynonville Temperature Statistics

May Temperature

St-athan (31km)

  • Lowest 15 May, 2026

    4.7 °C

  • Average May

    12 °C

  • Highest 21 May, 2026

    21.7 °C

Climate (2021–Present)

St-athan (31km)

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  • Average Low 2021–2026

    9 °C

  • Average 2021–2026

    11.8 °C

  • Average High 2021–2026

    14.7 °C
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