Treorchy Weather Forecast

    • 14
    • 19

    Cloudy

    • 8
    • 16

    Heavy rain

    • 6
    • 13

    Partly cloudy

    • 5
    • 13

    Sunny day

    • 6
    • 14

    Cloudy

    • 7
    • 14

    Cloudy

Today 19 Sep Wales

Remaining changeable with showers or longer spells of rain at times. Some brighter periods are also likely, mainly on Friday. Temperatures close to average but turning colder later Sunday. Breezy.

Graph Plots Open in Graphs

  • Temperature Forecast Met Office

  • Temperature Real-Time

Treorchy Temperature Statistics

September Temperature

St-athan (28km)

  • Lowest 14 September, 2025

    10.1 °C

  • Average September

    15.8 °C

  • Highest 6 September, 2025

    22 °C

Climate (2020–Present)

St-athan (28km)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    8.8 °C

  • Average 2020–2025

    11.6 °C

  • Average High 2020–2025

    14.5 °C
Get WillyWeather+ to remove ads