The Weather Outlook

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DEW
  • DEW
  • Advanced Member
29 July 2026 06:59:13
FAX - weak fronts moving southwards but not having a great deal of effect on temps in the south as a ridge of HP (1020mb) resolutely hangs on in the SW while LP (996mb) moves away from Scotland to the NE. The picture changes on Sunday 2nd as the ridge is replaced by  LP from mid-Atlantic, about 400 miles west of Cornwall by then. 

GFS Op 0z - that LP (above) weakens as it drifts up the Channel to merge with LP in Scandinavia by Thu 6th. After a brief rise in HP from the south, another LP from mid-Atlantic drifts in to cover Britain Sun 9th (centre 1000mb SW Wales), again moving on to merge with Scandi LP Wed 12th. Things look set for a re-run but then then the Scandi LP wakes up, projecting a trough into the North Sea Fri 14th with some rather cool NE-lies for Scotland while still warm and dry in the far south. 

Pressure remains fairly high over W Europe with slack pressure gradients throughout, so the heat there looks set to continue, while a broad trough comes and goes further east, between Finland and Kazakhstan.

ECM to T +240 - like GFS; the sequence ends Fri 7th with the mid Atlantic LP forecast  by GFS for Sunday 9th looking reluctant to move eastwards to Britain.

AIFS - London, after today maxima drop back to ca 25C until until Tue 4th when cooler (ca 20C) with some rain; then becoming drier and warmer (eventually 25C again) until dropping back with a little more rain Tue 11th. Edinburgh, maxima in the range 16-18C to Mon 10th except cooler Tue 4th, a really wet day; also cooler Tue 11th with some more rain.

GEFS - England, mean temp and most ens members around norm from tomorrow through to Thu 14th (cooler at first in NW); op and some ens members suggesting warmer for a few days around Mon 3rd and Wed 13th; chance of rain Tue 4th esp in north, decreasing later. Scotland, mean and ens ca 3C below norm from tomorrow, slowly rising to norm in a week's time; rain possible on any date, especially likely and heavy now, Tue 4th and Tue 11th.


It's not the voting that's democracy, it's the counting - Tom Stoppard

Chichester 12m asl

Matty H
29 July 2026 18:19:53

You said that two weeks ago as well, yet here we are 

Originally Posted by: Matty H 

And just like that, bar the odd shower early next week, high pressure takes charge again


Yate, Nr Bristol

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Hungry Tiger
29 July 2026 18:47:13

And just like that, bar the odd shower early next week, high pressure takes charge again

Originally Posted by: Matty H 

Exactly.  I've seen two forecast models now for yet another warm/hot dry spell for August.  🙂🙂🙂🙂


Gavin S. FRmetS.

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South Cambridgeshire. 93 metres or 302.25 feet ASL.



Brian Gaze
29 July 2026 20:59:52
ECM IFS looks more notably more progressive in the longer term.

UserPostedImage


Brian Gaze

Berkhamsted

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White Meadows
29 July 2026 21:02:32
For southern quarters - ECM seems keen on nudging 30c again, accompanied by mostly calm/ low wind speeds around the ‘big break’ (4th Aug). This suggests any rain potential generated by plumage, instead of meaningful levels. It f course not ruling out some flash floods in very local spots. The kind that evaporate within 45 minutes. 

On Sunday we saw a heavy shower pass over Storrington, yet 2 miles nearer the coast, nothing at all. 

Matty H
29 July 2026 22:02:44

ECM IFS looks more notably more progressive in the longer term.

UserPostedImage

Originally Posted by: Brian Gaze 

Mixed. Warm, settled spells, interspersed with westerly influences. Doesn’t tie in with the MetO outlook, so will be interesting to see how this plays out 


Yate, Nr Bristol

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DEW
  • DEW
  • Advanced Member
30 July 2026 06:50:29
FAX - weak and decaying fronts moving south but evaporating as they come up against ridge of HP in the Channel (1020mb Dover). As this HP moves north, LP approaches the SW but appears to stall 1008mb about 300 miles west of Cornwall but pushing some fronts ahead of it. (BBC weather last night showed showers for the south Mon & Tue but this morning's Meto rates these at only 20% chance)

GFS Op 0z - for next week to Fri 7th there is a slack pressure gradient from 1020mb N Scotland to 1015mb English Channel, the latter the remains of the LP referred to above. In the following week to Fri 14th there is first a modest rise in pressure for Britain (to 1020mb) following by an equally modest fall (to 1010mb), winds mostly from the north. The chart for Thu 20th shows an ex-hurricane on the Atlantic which could have stirred things up, but looks likely to stall south of Newfoundland.

ECM to T+240 - much as GFS, makes more of N-lies down the east coast

AIFS - London, maxima mostly not far from 25C to Thu 13th; hotter days to 29C around Mondays 3rd and 10th, cooler ones to 22C Thursdays 6th and 13th; occasional traces of rain from time to time, something more significant pushed into the future (again!) on Thu 13th. Edinburgh, maxima mostly 17-19C, might break 20C on Mon 10th. Significant rain Tue 4th and Thu 13th, bits and pieces at other times.

GEFS - in the south, mean temp with moderately good ens agreement close to or a little above norm (one agreed hot day thrown in Tue 4th, hot outliers appearing from Tue 11th). For the far south chances but not certainties of rain around Fri 7th, maybe from Tue 11th in east but rain possible in N England more generally. In Scotland, mean temp a couple of degrees below norm slowly rising to norm by Mon 10th, rain likely from Mon 3rd onwards but earlier and lighter in the far north.

Britain continues to be a country of two halves, and any relief from the drought in south has been deferred again


It's not the voting that's democracy, it's the counting - Tom Stoppard

Chichester 12m asl

Rob K
30 July 2026 07:42:59
00Z GEFS seem to have firmed upon another bump to around 15C at 850mb at the start of next week. The op run is generally pretty hot with several more 30C days and another bump to the mid 30s a week later, but overall there are fewer crazy hot runs than on the 12Z and 18Z sets. I am still eyeing the timing and southward extent of that low around the 10th-12th as I want clear skies in the Balearics, at least for a couple of minutes on the Wednesday evening!
Yateley, NE Hampshire, 73m asl

"But who wants to be foretold the weather? It is bad enough when it comes, without our having the misery of knowing about it beforehand." — Jerome K. Jerome

Jiries
30 July 2026 08:08:05

00Z GEFS seem to have firmed upon another bump to around 15C at 850mb at the start of next week. The op run is generally pretty hot with several more 30C days and another bump to the mid 30s a week later, but overall there are fewer crazy hot runs than on the 12Z and 18Z sets. I am still eyeing the timing and southward extent of that low around the 10th-12th as I want clear skies in the Balearics, at least for a couple of minutes on the Wednesday evening!

Originally Posted by: Rob K 

With the 00z ensembles for here also show 2 further bumps so more like August 1995 type that stay warm to hot at times and very dry.  25-30C for here next month likely and London 27-32C.  If this Low go to those regions as you said above this will bring another heatwave for UK.

Charmhills
30 July 2026 08:08:32
https://services.meteored.com/img/models/ecmwf/ECMWF_120_GB_SFC_fr-FR_fr.png 

https://services.meteored.com/img/models/ecmwf/ECMWF_198_GB_SFC_fr-FR_fr.png 

https://services.meteored.com/img/models/ecmwf/ECMWF_204_GB_SFC_fr-FR_fr.png 

I believe we may see some heavy showers/heavy, thundery rain next week, possibly??

🌩️☂️


Loughborough, EM.

Knowledge is power, ignorance is weakness.

Duane.

The Beast from the East
30 July 2026 09:08:40

https://services.meteored.com/img/models/ecmwf/ECMWF_120_GB_SFC_fr-FR_fr.png

https://services.meteored.com/img/models/ecmwf/ECMWF_198_GB_SFC_fr-FR_fr.png 

https://services.meteored.com/img/models/ecmwf/ECMWF_204_GB_SFC_fr-FR_fr.png 

I believe we may see some heavy showers/heavy, thundery rain next week, possibly??

🌩️☂️

Originally Posted by: Charmhills 

some rain is likely next week in the form of storms.  Not ideal but with the absence of any frontal rain this will have to do.  

Around the 10th another heatwave is possible as well.  


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

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Rob K
30 July 2026 11:43:02
6Z GFS is hot again... takes us to 40 30C days by the end of the run, and close to another 35C. Again next to no rain in the next 10 days.
Yateley, NE Hampshire, 73m asl

"But who wants to be foretold the weather? It is bad enough when it comes, without our having the misery of knowing about it beforehand." — Jerome K. Jerome

Jiries
30 July 2026 11:49:56

6Z GFS is hot again... takes us to 40 30C days by the end of the run, and close to another 35C. Again next to no rain in the next 10 days.

Originally Posted by: Rob K 

What ever the temperatures outcome on the 06z ensembles for here I really hope to see sunny days that had been absent since start of July.  Hope August a better month sunshine performance.

Bertwhistle
30 July 2026 12:44:19
Yes GFS 6z Op progs in heatwaves 5 and 6.
Bertie, Itchen Valley.

Retire while you can still press the 'retire now' button.

Brian Gaze
30 July 2026 14:08:12
This morning's ECM actually dropped a (relatively) decent amount of rain over England and France in the medium term.  

UserPostedImage


Brian Gaze

Berkhamsted

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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan

The Beast from the East
30 July 2026 19:11:42

This morning's ECM actually dropped a (relatively) decent amount of rain over England and France in the medium term.  

UserPostedImage

Originally Posted by: Brian Gaze 

Evening run looks even wetter.

Finally some proper rain in the forecast for midweek onwards


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

Jiries
30 July 2026 20:10:39

Evening run looks even wetter.

Finally some proper rain in the forecast for midweek onwards

Originally Posted by: The Beast from the East 

Opposite to GFS ensembles say no to rain and show 2 warm/hot spell coming up on Monday onward then again another one.  Slight rain spikes as usual being pushed back Beast as it been the case since June.

Matty H
30 July 2026 21:37:30

Evening run looks even wetter.

Finally some proper rain in the forecast for midweek onwards

Originally Posted by: The Beast from the East 

Fourth time you’ve called an end. Let’s see if it’s fourth time lucky 


Yate, Nr Bristol

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