Pontyclun Weather
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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Policyline weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Pont-y-clun yesterday saw a settled start under high pressure, and according to the live forecast above, the coming hours remain largely dry with variable cloud. This pattern suits the sheltered valley location just north of the M4 corridor, though mist may linger into mid-morning before any breaks arrive.
How does the local geography affect Pont-y-clun’s weather?
The village lies within the Ely Valley, roughly eight miles north-west of Cardiff and about ten miles inland from the coast at Barry. That position means Pont-y-clun often escapes the strongest sea breezes but can trap low cloud and fog in calm, anticyclonic conditions. The surrounding hills, rising to around 200 metres to the north, offer some shelter from south-westerly winds but can also encourage localised showers when the flow turns unstable. In winter, overnight frosts are more common here than on the coast, and in summer, maximum temperatures tend to be a degree or two higher than along the Glamorgan shoreline. The live forecast above reflects this inland nuance, so checking it before any journey across the vale is wise.
Will the weekend bring any change?
Later this week, a weak frontal system may introduce thicker cloud and a small chance of drizzle, but nothing disruptive. The live forecast above will show whether that front holds together or fizzles. As always in Pont-y-clun, if you are heading to the coast at Porthcawl or the heritage park at Llantrisant, the difference in cloud cover can be surprising, so keep an eye on bbc news for any sudden warnings.
Is the forecast for Pont-y-clun the same as for Cardiff?
Not always. Pont-y-clun is inland and slightly higher than Cardiff city centre. The capital benefits from coastal moderation, whereas the Ely Valley can be cooler in summer mornings and colder on winter nights. Always check the live forecast above for your exact location.
When does fog form most often in the valley?
Radiation fog develops on clear, calm nights from late autumn to early spring. The valley floor traps moisture, and without wind, visibility can drop below 100 metres by dawn. It usually lifts by late morning once the sun warms the ground.
Does Pont-y-clun flood often?
The River Ely runs through the village and can rise after prolonged heavy rain. Localised surface water flooding on the A4119 and around the railway bridge is the main concern. The live forecast above will flag any prolonged rainfall events that could cause issues.
Sources
For other parts of the UK, see our UK weather hub or the 10 Day Weather Forecast UK for a longer outlook.
