Arpege suggests a chance of a new Dutch national record on Tuesday. Current record is 40.7C.

Also 35c on Monday and 36c on Tuesday for here.

FWIW in this part of Kent June will have been overwall warmer than the same month in 1976. I'm glad I wasn't alive then to experience the rest of that summer!

As for what 35 would look like on the BBC charts, well, we know that from a couple of years ago. 

https://ukwct.org.uk/weather/2022.jpg 

They've always had red on the colour chart, but it used to only appear for 40C or higher - so was never seen in the vicinity of the UK. They apparently moved the "red range" back to increase contrast from the yellows and oranges previously used, but as I'm not partially sighted I can't comment on how effective that is. Here's a screengrab from August 1990 - I had a wistful sigh watching it again, as Michael Fish described 27C in London in August as being "hot". Ahh... these days of course it'd just be "warm", not even "very warm"!

EDIT: Here's the full "hot" scale in the old days, courtesy of our own Kevin Bradshaw! The deep reds are 40+:

https://ukwct.org.uk/weather/2000.jpg 

Second EDIT: The GFS is up to its usual tricks. 34s here for Monday and Tuesday, but then a deluge afterwards. I've never seen so much rain forecast on an op run away from the mountains, here's the view from xcweather:

https://ukwct.org.uk/weather/xc.jpg 

I don't know what's less likely to happen... two inches of rain in the afternoon/evening, or a solar noon temperature of just 17C. I'd suspect neither will happen in the end!

A number of model runs have shown this type of development occurring next week. As well as potentially producing significant rain in central and eastern areas, the temperature contrast with earlier in the week is striking. A 9°C maximum in central Britain would be something!

That is not in any way going to help the farmers in those parts of NE Scotland which are still at moderate water scarcity status according to SEPA, especially if that rain doesn't even make it Scotland at all.

The low maximas next week have shown up quite a lot on GFS. I do think we are in for it after this hot spell finishes, and face a fairly lengthy cool and changeable spell.

Not in an isolated incident maybe but they definitely are at the frequency they are occurring

https://www.metoffice.gov.uk/blog/2025/scorching-junes-how-often-do-we-see-temperatures-over-30c-in-june 

No good to me . Move that rain further south please.😄

As Darren said, the GFS 12Z shows a deluge in the south when the heat breaks.

Based on the output I have seen I don't think cool and changeable is the most likely picture - it seems like high pressure centred just to the west of the UK is favourite by the second week of July, so fairly settled but less warm than of late.

I was at school in Southampton that day and (not knowing aged 11 the rules about temperature measurement) remember going repeatedly back to our in-the-sun thermometer attached to the hut. It read over 120F and was facing laterally so not towards the June sun.

Maybe some don't realise the record was broken 3 times in 3 days- 34.9 on 26th, then 35.5 then 35.6C.  This was all in Mayflower Park which I knew well and was decommissioned around 1999/2000. It was notorious for sea breezes ruining the max some days, but in E /NElies the air came across the town first and gave some anomalous temperatures. For whatever reason, there were no sea breezes on these 3 record days. On a school trip around then we were all hiding in a concrete cylinder in the Mayflower Park  playground from the ladybirds. Didn't work.

Are you in the Umbrella business? 🤣

Every year it's the same forecast from Moomin. I don't comment on the models as I don't have the expertise, he should follow suit.

It really was an amazing spell ,but like you mention , the very local  conditions boosted the temps in that area.

It would be interesting to see what the maxima were at other stations during that spell. The Monthly Weather report shows 34.2 at Kew and Cardington, 34.1 at Thorney Island and a record 34.8C at London Weather Centre (which I believe was a rooftop site?).

Glad you were only fairly sure.

GFS Op stands out like a sore thumb. 

Like the one now?

🤣🤣🤣

Can someone please answer a question re. this upcoming hot spell. I have heard some forecasters say it is due to hot air being drawn up from the near continent and another (Carol Kirkwood?) say it is due to a heatwave in America which has now travelled across the Atlantic Ocean. Which is correct?

To balance out a high of 35c we need a high of 7c  (given an average max for time of year of 21c)  😉       It won't be that cool.

Both

The current warm air is being drawn across the Atlantic from the USA heat dome.    Over the weekend this becomes less influential, but additional heat will push up from the Spanish heat dome.

So we are being "attacked" from two sides. Maybe this explains why the temps are going to be so high, including the dry ground situation we are currently facing. 

I have been watching the potential for a significant rainfall event around the middle of next week.  ECM was showing it for several runs before it briefly disappeared but it has now returned with a vengeance: ECM has around 50-75mm over a 24-36 hour period across East Anglia and the South East, GFS has it slightly later and a little further south-east.  Definitely something to watch because that sort of intensity and duration would cause issues.

Kieran is one of the golden greats of this forum. But this comment made me laugh.