First day of summer arrives with a sizzle: June will begin with year-high 84F heat tomorrow with no rain and little wind before thunderstorms hit on Sunday

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The first day of summer tomorrow is expected to start on a sizzling high – with temperatures of 84F expected – making it the hottest day of the year so far. 

Today there is very warm sunshine developing across England and Wales and it‘s a sign of what‘s to come.

And as we enter the meteorological first day of UK summer tomorrow, the mercury is expected to soar, with the UK set to swelter in temperatures hotter than Barcelona and Ibiza in .

The mercury is forecasted to rise to 79F in and little wind and temperatures as high as 84F are predicted across the south east.

Elsewhere in the UK forecasters expect it to be cloudy with some sunny spells and a few showers. 

Today there is very warm sunshine developing across England and Wales and it‘s a sign of what‘s to come. Sun seekers are pictured making the most of the morning sunshine today by punting on the River Cam in Cambridge

The average temperature for June is 62.6F and its likely that most of the UK should be warmer on Saturday. Image shows the sun rising over St Mary‘s lighthouse in Whitley Bay on the North East coast on Friday

Most of Scotland will be cloudy on Saturday, with highs of 60.8F and Northern England should stay around 64.4F on both days.

The average temperature for June is 62.6F and its likely that most of the UK should be warmer than on Saturday.

But while some will be basking in the heat on Saturday there will be outbreaks of rain spreading east on Sunday with risk of thunderstorms. 

But it will be fresher and cooler with sunshine and scattered showers Monday and Tuesday. 

The UK is set to be hotter than Barcelona, Spain tomorrow, with little wind and sunny weather expected in the south east, and temperatures expected to soar to 79F in London and 84F in the south east

The weather for this weekend is warming up today and it‘s a sign of things to come with warm and sunny weather predicted across parts of the country tomorrow on the hottest day of the year

weather forecaster Simon King took to Twitter to break the good news that the UK is set to enjoy the hottest day of the year tomorrow

The south east of England is expected to stay warm, with highs of 25C (77C).

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The difference between the two days is down to the high pressure which will dominate much of Saturday being replaced by low pressure on Sunday.

Met Office Forecaster Nicola Maxi said: ‘There will be a bit of coastal fog in south England and Wales on Saturday morning but the day should be very warm.

‘The south east will hang on to that warm, dry weather on Sunday, while the west starts to see a build-up of cloud, with rain later on.

‘Scotland will see a few showers across both days, and the same in the north on Sunday.‘

The south east of England is expected to stay warm on Saturday, with highs of 84F expected

When does the first day of summer arrive in the UK?

There are two different dates that can be considered as the official start of UK summer.

Astronomical summer 

The astronomical calendar determines the seasons due to the 23.5° tilt of the Earth‘s rotational axis in relation to its orbit around the sun. 

Both equinoxes and solstices are related to the Earth‘s orbit around the sun.

Solstices and equinoxes are considered to be the astronomical transition points between the seasons and mark key stages in the astronomical cycle of the earth. 

In a year there are two equinoxes (spring and autumn) and two solstices (summer and winter). 

The dates of the equinoxes and solstices aren‘t fixed due to the Earth‘s elliptical orbit of the sun

The Earth‘s orbit around the sun means that in early January, the sun is closest (known as perihelion) and in early July it is most distant (aphelion).

Meteorological summer 

The meteorological summer consists of splitting the seasons into four periods made up of three months each. These seasons are split to coincide with our Gregorian calendar making it easier for meteorological observing and forecasting to compare seasonal and monthly statistics. By the meteorological calendar, spring starts on 1 March.

The seasons are defined as spring (March, April, May), summer (June, July, August), autumn (September, October, November) and winter (December, January, February).

Information taken from the Met Office  

 

  

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