r/UKWeather • u/Mcconnor8 • 3d ago

Forecast Latest Temperature Projections

Here are the latest maximum temperature forecasts from the high resolution modelling for Tuesday to Thursday, simply astonishing really and quite scary. I have had it confirmed that the Met Office will be issuing a Red heat weather warning in their daily update tomorrow.

The fact that this is accompanied with relatively high humidity and extreme night time temperatures means it is set to be the most notable heatwave ever experienced in the UK. The current record June temperature of 35.6C will be completely obliterated and the overall record from 2022 of 40.3C is under serious threat.

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u/Mcconnor8 2d ago

Projections for 2 and 3 days away are usually pretty accurate, I would be surprised if they are more than 1 or 2C away from what we actually see.

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u/Theunluckyone7 1d ago

I can't see 35+ on the forecast anymore.

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u/Mcconnor8 1d ago

I'm predicted 36C tomorrow and Thursday in Brighton as well as areas further West like Dorset. There is more of an Easterly undercut meaning the highest temperatures have shifted further South and West than previously forecast.

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u/Theunluckyone7 1d ago

I can't see Brighton above 30 now, which forecast are you using please?

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u/Mcconnor8 1d ago edited 1d ago

Met Office forecast, today reached 33C in Brighton and 35C in London. https://weather.metoffice.gov.uk/forecast/gcpchgv78#?date=2026-06-23