Trevethin Weather Forecast

    • 5
    • 13

    Cloudy

    • 7
    • 13

    Cloudy

    • 6
    • 13

    Cloudy

    • 9
    • 12

    Light rain

    • 11
    • 15

    Light rain shower

    • 10
    • 17

    Cloudy

    • 10
    • 19

    Partly cloudy

Today 15 May Wales

The odd early shower is possible, otherwise a dry day ahead with light winds and plenty of sunshine by the afternoon. Feeling less chilly in lighter winds. Maximum temperature 13 °C.

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Trevethin Temperature Statistics

May Temperature

St-athan (43km)

  • Lowest 11 May, 2026

    4.8 °C

  • Average May

    11.6 °C

  • Highest 9 May, 2026

    19.1 °C

Climate (2021–Present)

St-athan (43km)

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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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