Mountain Ash Weather Forecast

    • 8
    • 14

    Cloudy

    • 8
    • 16

    Cloudy

    • 9
    • 18

    Cloudy

    • 5
    • 15

    Cloudy

    • 4
    • 12

    Cloudy

    • 6
    • 13

    Cloudy

Today 7 May Wales

Often cloudy with a scattering of showers throughout the day. Occasional bright or sunny breaks developing through the day with light winds. Maximum temperature 16 °C.

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Mountain Ash Temperature Statistics

May Temperature

St-athan (31km)

  • Lowest 2 May, 2026

    7.3 °C

  • Average May

    12 °C

  • Highest 4 May, 2026

    16.9 °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

    14.6 °C
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