Mountain Ash Weather Forecast

    • 8
    • 11

    Heavy rain

    • 9
    • 15

    Heavy rain

    • 9
    • 12

    Partly cloudy

    • 11
    • 16

    Heavy rain

    • 8
    • 13

    Heavy rain shower

    • 8
    • 13

    Partly cloudy

Today 23 Oct Wales

Rain pushes northeastwards and strong winds become more widespread through the day with gales in coastal areas. Drier and brighter in the southwest from mid-afternoon, but remaining windy. Maximum temperature 11 °C.

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Mountain Ash Temperature Statistics

October Temperature

St-athan (31 km)

  • Lowest 17 October, 2026

    5.4 °C

  • Average October

    13.6 °C

  • Highest 2 October, 2026

    20.3 °C

Climate (2021–2026)

St-athan (31 km)

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  • Average Low 2021–2026

    9.1 °C

  • Average 2021–2026

    12 °C

  • Average High 2021–2026

    14.8 °C
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