Mountain Ash Weather Forecast

    • 6
    • 13

    Sunny day

    • 6
    • 13

    Sunny day

    • 7
    • 12

    Sunny day

    • 8
    • 13

    Cloudy

    • 9
    • 14

    Partly cloudy

    • 9
    • 14

    Cloudy

Today 16 Oct Wales

A chilly start to Friday, leading to a drier and brighter day with plenty of sunny spells, although with a risk of showers. Feeling noticeably cooler in the northwesterly breeze. Maximum temperature 15 °C.

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Mountain Ash Temperature Statistics

October Temperature

St-athan (31 km)

  • Lowest 4 October, 2026

    7.7 °C

  • Average October

    14.9 °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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