UK Weather: Met Office forecasts temperatures to rise

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The latest maps from Netweather show maxtimum temperatures surging to 29C (84F) around London midway through next Monday afternoon. Looking ahead to July 19-25, BBC Weather has forecast there are some “increasingly strong signals for a persistent high-pressure system to linger in Scandinavia” before the late of the month. The high-pressure system covering the UK over the coming days will slowly shift into Scandinavia next week, but this will first trigger “sunnier and drier days” as the high pressure is “near enough to maintain its grip on the UK weather pattern”. 

This will push low pressure away from the UK and much closer to Iceland, remaining a significant distance from the northwest of the country.

The BBC Weather forecast for July 19-25 says: “By late July there are some increasingly strong signals for a persistent high-pressure system to linger in Scandinavia.

“The high pressure over us this week will gradually shift into Scandinavia next week.

“This means that we should see some sunnier and drier days at first as high pressure is near enough to maintain its grip on the UK weather pattern.

“During this time, low pressure will be pushed away nearer to Iceland and should remain well off to the northwest.”

But as the high pressure drifts further away from the northern coasts, there are increased chances of low-pressure systems replacing them, bringing with it some fresher and wetter conditions.

BBC Weather said this shift away from the UK “will take most of this week” as high-pressure systems can often take their time to “move about”, especially during the summer weeks and months.

There is a chance of a low-pressure system trying to creep in from the southwest earlier in the week, but opposing high-pressure front should fend this off to the south until midweek.

Uncertainty remains around how far east the high-pressure front will be located during this week, but if it builds near Germany, a southernly wind could develop throughout France and flow into the UK.

But BBC Weather said this would also “tap into some hot North African air”, increasing the likelihood of the UK being able to bask in a scorching heatwave later that week.

The forecaster said: “Computer models are really struggling with how far east high pressure will be during this week, and that has a big impact on our temperature forecast.

“If high pressure builds strongly near Germany, we could see a southerly wind develop through France and into the UK.

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“This would tap into some hot North African air, so there is a chance for a heatwave to develop later in the week.”

For that to happen, BBC Weather said “everything would need to line up perfectly” but if a heatwave does develop, it could last four or five days.

Similarly for the period July 19-28, the Met Office has forecast the UK continuing to be influenced by an area of high pressure moving across the country.

There is forecast to be plenty of dry and sunny conditions developing early on in the week but also some drizzle at times across the Northern Isles and some eastern coasts.

The forecaster said following this, “it’s likely that we’ll see a good deal of dry weather with plenty of sunshine, at least at first”, but also warned there is a risk of heavy showers and thunderstorms developing from the South and West.

Temperatures will continue to be “very warm at first, and perhaps hot in central and southern areas”, before likely becoming cooler and fresher from the southwest later in the month.

The Met Office said for July 19-28: “This period will continue to be influenced by an area of high pressure slowly moving across the UK.

“It’s expected to be widely dry with plenty of sunshine developing on Monday, however cloudy with perhaps some drizzle at times across the Northern Isles and some eastern coasts.

“Following this, it’s likely that we’ll see a good deal of dry weather with plenty of sunshine, at least at first.

“Through this period there’s an increasing risk of heavy showers and thunderstorms developing from the South and West.

“Temperatures will continue to be very warm at first, and perhaps locally hot in central and southern areas, before probably becoming somewhat cooler and fresher from the southwest later next week heralding a change to a more unsettled spell towards the end of July.”

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