Tonmawr Weather Forecast

    • 6
    • 9

    Cloudy

    • 3
    • 9

    Light rain

    • 1
    • 8

    Partly cloudy

    • 5
    • 8

    Light rain

    • 8
    • 11

    Overcast

    • 7
    • 12

    Cloudy

    • 4
    • 11

    Light rain

Today 26 Mar Wales

A chilly and sunny start with cloud building throughout the day but remaining largely dry until rain arrives across west Wales from mid-afternoon. Feeling less chilly thanks to lighter winds. Maximum temperature 9 °C.

Tonight 26 Mar Wales

Turning increasingly cloudy with thicker cloud continuing to push eastwards, outbreaks of rain becoming more widespread towards midnight with some heavy bursts over the high ground. A strengthening gusty wind. Minimum temperature 2 °C.

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Tonmawr Temperature Statistics

March Temperature

St-athan (34km)

  • Lowest 14 March, 2026

    2.6 °C

  • Average March

    8.9 °C

  • Highest 18 March, 2026

    17.9 °C

Climate (2021–2026)

St-athan (34km)

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  • Average Low 2021–2026

    8.9 °C

  • Average 2021–2026

    11.8 °C

  • Average High 2021–2026

    14.6 °C
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