St Asaph 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 ·
The live forecast above shows the current conditions for St Asaph, the smallest city in the UK, located in the Vale of Clwyd about five miles from the north Wales coast. The data gives you a reliable snapshot of what to expect today.
What does the forecast say for St Asaph today?
The live forecast above updates throughout the day, so check it for the most accurate temperature, wind and rain details. St Asaph sits in a valley near the River Elwy, which can trap low cloud and mist, especially during autumn and winter mornings. The nearby coast at Rhyl and Prestatyn often brings a moderating maritime influence, keeping winters milder than inland parts of Denbighshire but also increasing the chance of breezy conditions.
How reliable is the BBC weather data for St Asaph?
BBC Weather uses data from the Met Office, and for a compact location like St Asaph the nearest observation points are at Rhyl and Llanbedr. The live forecast above is a good guide, but local variations – particularly in summer thunderstorms or hill fog from the Clwydian Range – can occur. Always cross-check with the Met Office if you need details for outdoor plans.
Is St Asaph prone to flooding?
The River Elwy and River Clwyd have caused flooding in the past, especially in winter after prolonged rain. The city’s flood defences were improved after the 2012 storms. Check the live forecast above for heavy rain warnings.
When is the driest period in St Asaph?
Late spring and early summer (May to July) typically see the lowest rainfall. The live forecast above will show any dry spells, but average rainfall in the Vale of Clwyd is around 800mm a year, lower than the Welsh average thanks to the rain shadow of Snowdonia.
Does the coast affect St Asaph’s weather?
Yes – the Irish Sea keeps winter temperatures a degree or two warmer than inland, but also brings frequent sea fog and brisk westerlies. The live forecast above includes wind speed and direction, useful if you’re walking the nearby coastal path.
For regional comparisons, see the UK weather hub or check conditions in Liverpool, just 30 miles east. If you’re planning ahead, the 10 Day Weather Forecast UK page gives a longer view.
