Blackmill Weather Forecast

    • 14
    • 19

    Partly cloudy

    • 14
    • 17

    Thunder

    • 15
    • 18

    Thunder shower

    • 15
    • 19

    Heavy rain

    • 13
    • 17

    Light rain shower

    • 13
    • 17

    Light rain shower

    • 14
    • 18

    Light rain shower

Today 27 Aug Wales

Turning unsettled from the west with a band of heavy, thundery rain moving eastwards through the morning accompanied by gusty winds. Becoming drier and brighter into the afternoon with sunnier spells. Maximum Temperature 20C.

Tonight 27 Aug Wales

Largely fine throughout the evening with late sunshine. Showers lingering around coasts pushing further inland overnight, though eastern areas managing to stay mostly dry with clear spells. Breezy around coasts. A fresher feeling night overall. Minimum Temperature 10C.

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Blackmill Temperature Statistics

August Temperature

St-athan (19km)

  • Lowest 2 August, 2025

    10.2 °C

  • Average August

    18.3 °C

  • Highest 12 August, 2025

    31.3 °C

Climate (2020–Present)

St-athan (19km)

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  • Average Low 2020–2025

    8.7 °C

  • Average 2020–2025

    11.6 °C

  • Average High 2020–2025

    14.5 °C
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