20/06/2017 Weather for the Week Ahead

Another hot day in the city and for some of us, for sure,

a little too hot.

Temperatures got up to 33 degrees.

Again, the hottest day of the year, so far, on Monday.

Just west of London - 33 degrees,

and this temperature was higher

than the forecast temperatures

for all of these fabulous places.

In fact, we're beating Acapulco, we are beating Singapore.

The other side of the Atlantic there in Miami,

it is not even 30 degrees Celsius.

So the set-up for the rest of the week, at least across

southern areas of the UK, is that heat wafting in from the south.

The jet stream is closer to Northern Ireland and Scotland

so here we have the fresher,

slightly more unsettled weather

and that cooler air will be

reaching southern areas but not until a lot later on in the week.

I want to show you the temperatures around midnight into Tuesday.

Look at these values - 23, 24 degrees

across some southern and central parts of the UK.

This is midnight, sun down.

We normally get that during the daytime and these are

the already night-time temperatures.

So it just shows how unusually hot the air is over us.

Of course, a lot more pleasant

across Scotland and Northern Ireland.

One thing that is going to be happening through the course

of Monday night into Tuesday,

a very weak cool front will be moving across the UK,

moving southwards,

and that means that the slightly fresher air here

in the north will be sinking southwards too,

so pushing the heat a little bit further south.

We're talking about 30 for Cardiff and London,

not far off 30 for Plymouth,

whereas these coastal areas in the North Sea,

and also further north, will be a lot fresher.

Wednesday, we start to see weather fronts moving in, encroaching,

so that means some outbreaks of rain possibly even some

thunderstorms around anywhere from Northern Ireland into

northern England and Scotland as well. So a much fresher feel.

Fairly humid, fairly muggy

but those temperatures certainly

nowhere near as high as those in the south.

It could even be creeping up over 30 degrees again in the south.

Wednesday is the start of Glastonbury, of course,

but look how quickly those temperatures dip away from 29

back into the high teens as we go through the course of the week.

The reason why we are going to be seeing dipping temperatures

is because eventually a cool front, you can see it here,

moves across the UK.

There is another one heading our way as well but this one, behind it,

those temperatures dip away.

You can see the teens, still some heat just about ahead of it there

across the south-east and East Anglia on Thursday.

Then Friday, that process continues

so that fresher weather gets in at least for most of us.

It'll be cloudier, there will be a little bit of rain around

but again that extreme south-east may hold on to some of that warmth.

The weekend - looks like low pressure will be very close by.

It will be sending fresher air

and essentially what is going to be happening

is that fresher air will be cutting off the supply

of that warmth wafting in from the south,

drawn in by the high pressure.

Next week, there is not an awful lot of change.

It is all about the orientation.

It looks like the low pressure still brings the fresher air in

but that high pressure still is very close and you can see that

warm air is very close to the south-east.

So it just takes a little nudge of these two,

a little shift, and that will make all the difference to how warm

or how cool it is going to be in different parts of the country.

But I think overall, next week, it will be fresher for most,

there will be some rain around but probably

staying on the warm side across southern areas.

Stay cool.