The Met Office has said that Wales could see the "hottest day of the year so far" as temperatures reach 21°C in parts of the country on Sunday, May 21. The forecaster has said that Wales and England are set to enjoy glorious weather over the weekend, with sunny weather forecast on both Saturday and Sunday.
Despite the warm weather we are not quite in heatwave territory yet. Explaining on social media, the forecaster said that "it’s only an official heatwave if it reaches a specific temperature threshold three days running. No, we’re not going to reach those figures this week, though it will feel pleasant in the sunshine for many."
It went on to add: "This week will see plenty of sunshine and warmth for many, especially in the south." However, it explained that due to the inconsistencies in temperatures over a four day period it will not be considered a heatwave, despite temperatures reaching around 20C for some.
Read more: What the Met Office says about the chances of a heatwave hitting Wales this weekend
Despite this, looking ahead to the weekend meteorologist Aidan McGivern said "It's possible that it will be the hottest day of the year so far" on Sunday and that Wales will see sunny days and cooler nights.
Separate to this, presenting the 10-day trend for the UK, he also said: "Things have been wetter than normal, especially in the south, and we haven't seen much sunshine and it hasn't felt that warm."
Explaining that the jet stream has moved from the south to the north of the UK, he said: "There will be some showers around but generally speaking with the jet stream to the north that is where the low pressure will go, meaning high pressure from the Azores will be pulled in."
While he said the UK will not be "entirely immune" to cloud and showers, but "on the whole" high pressure will be in charge bringing dry and settled weather.
The Met Office forecast for Wales this week says: "Any rain easing through the morning on Friday, leaving plenty of sunny spells into the afternoon. Some showers possible, these perhaps heavy and thundery at times. Feeling warm in any sunshine. Maximum temperature 20 °C.
"Plenty of fine weather during this period. Some showers are possible, though these mostly light and scattered. Chilly nights with patchy mist in places, but feeling warm in the sunshine."
The Met Office long-range forecast for the UK for Monday, May 22, to Wednesday, May 31, says: "A settled, albeit often rather cloudy start to the week for many with the best chance of sunshine in Wales and southwest England. Occasional rain is likely to occur across parts of norther Britain and Northern Ireland along with possible showers, some potentially heavy, in the east of England.
"As the week progresses and into the following week, the predominantly settled conditions should continue, with mostly fine and dry weather for many areas, though spells of more unsettled weather are possible in the northwest and perhaps far southeast. Winds generally light, but potentially stronger in the far northwest of Scotland and far southeast of England. Daytime temperatures are expected to be generally close to normal, or slightly above normal, for this time of year."
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