BBC weather forecaster Derek Brockway says heatwave 'likely' as temperatures to smash 30C in Wales
BBC weather forecaster Derek Brockway says heatwave 'likely' as temperatures to smash 30C in Wales
After something of an unpredictable period, Wales is set to be scorching on Monday, with one part set to see the hottest day of the year so far
The Met Office weather map for Monday at 4pm
A heatwave is likely in Wales over the coming days as temperatures look set to soar past the 30C mark in parts of the country resulting in the hottest day of the year so far.
After a humid but at times damp and cloudy past week, most of Wales is set to bask in glorious sunshine on Monday, with one spot in particular seeing highs of 31C. The hottest day of the year so far was on Thursday, June 19, with temperatures reaching 30C in Cardiff and at Trawscoed in Ceredigion.
But that looks likely to be surpassed on Monday with the Met Office forecasting 31C for Monmouth by late afternoon. For our free daily briefing on the biggest issues facing the nation, sign up to the Wales Matters newsletter here .
Most of Wales will enjoy temperatures in the mid to late 20s, and if you like things a bit cooler you might be better off heading as west as possible towards the coast, with St David's in Pembrokeshire seeing highs of around 21C, the same as Aberystwyth further north in Ceredigion.
Things will already be nice and warm by 10am on Monday, as this Met Office map shows
Meanshile, much further inland and across the border into England, things will be even hotter than they are in Wales, with London set to bake in a temperature of 33C on Monday afternoon.
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Back in Wales, most places will be enjoying highs of 21C by as early as 10am before things really heat up into the afternoon, with Monmouth to see the highest temperature of the day - 31C - by 4pm.
To be officially classed as a heatwave, temperatures need to exceed 25C on three days in a row.
According to BBC weatherm Derek Brockway, this is 'likely' to occur, at least in south east Wales.
'Heatwave likely in Monmouthshire Sunday to Tuesday,' he said on X. 'Maximum temperatures 26°C or more. Over 30°C on Monday. Nearer normal Wednesday onwards. The July average is 22°C.'
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According to the Met Office, Sunday evening will be 'mainly dry with some late evening sunshine, warm and very humid'.
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As for Monday, the Met Office forecasts: 'Rather murky to start in the north, but skies will soon clear to leave a dry and fine day. Very warm or hot, especially in the sunshine, with light winds.'
In its outlook for Tuesday to Thursday, the forecaster said: 'Feeling much fresher from Tuesday with a few bright spells, but cloudier skies bringing some patchy rain too, this sometimes heavy on Thursday. Winds generally light, with temperatures near average.'
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