Dyffryn Weather Forecast
- 17
- 20
Cloudy
- 12
- 19
Light rain shower
- 12
- 16
Heavy rain shower
- 13
- 17
Light rain shower
- 12
- 17
Light rain shower
- 11
- 16
Heavy rain shower
Today 6 Sep Wales
More settled on Friday and Saturday with a few light showers, but mainly dry with bright or sunny spells. Unsettled again on Sunday with outbreaks of rain and strong winds.
Dyffryn Temperature Statistics
September Temperature
St-athan (29km)
Lowest 4 September, 2025
12.7 °CAverage September
16 °CHighest 1 September, 2025
19.5 °C
Climate (2020–Present)
St-athan (29km)
Average Low 2020–2025
8.8 °CAverage 2020–2025
11.6 °CAverage High 2020–2025
14.5 °C