The Weather Outlook

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Charmhills
14 August 2026 07:44:22

For the sake of balance, I'm looking at the 12z London ensembles from ECM and it's looking like the (beginning of the) end of the drought next week.

https://wetterzentrale.de/en/show_diagrams.php?geoid=49069&model=ecm&var=4&run=12&lid=ENS&bw=1 

Originally Posted by: Tom Oxon 

Yeah, changes may well be afoot??


Loughborough, EM.

Knowledge is power.

Duane.

Matty H
14 August 2026 08:57:36

Yeah, changes may well be afoot??

Originally Posted by: Charmhills 

It’s a very different picture if you select Bristol 


Yate, Nr Bristol

TBFTEIARBSC

Bertwhistle
14 August 2026 10:38:37
This morning's GFS ensembles show another bumpstarting to grow, fourth week of the month. The ones we have had have often started this way, with increasing numbers of members joining with time, although it's often the Op in the thick of it. If it becomes a consistent signal we could be on for another spell of high temperatures.
Bertie, Itchen Valley.

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

Saint Snow
14 August 2026 10:50:29

This morning's GFS ensembles show another bumpstarting to grow, fourth week of the month. The ones we have had have often started this way, with increasing numbers of members joining with time, although it's often the Op in the thick of it. If it becomes a consistent signal we could be on for another spell of high temperatures.

Originally Posted by: Bertwhistle 

A last hoorah end of Aug into Sept would be nice.


Martin

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Bertwhistle
14 August 2026 15:19:47
Heat blister now inflaming (6z) , with Op and Control on board around 23rd, pushing the 850 mean very close to 10°C again. 
Bertie, Itchen Valley.

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

Jiries
14 August 2026 15:52:04

This morning's GFS ensembles show another bumpstarting to grow, fourth week of the month. The ones we have had have often started this way, with increasing numbers of members joining with time, although it's often the Op in the thick of it. If it becomes a consistent signal we could be on for another spell of high temperatures.

Originally Posted by: Bertwhistle 

Following:  Yes it there on the 06 ensembles so hope we get heatwave 7 but don't expect high 30's type maybe 30 plus heatwaves to come.

Hungry Tiger
14 August 2026 18:10:46

Following:  Yes it there on the 06 ensembles so hope we get heatwave 7 but don't expect high 30's type maybe 30 plus heatwaves to come.

Originally Posted by: Jiries 

I won't be calling heatwave No7 yet. From what I've seen of the models we've got at least 2 weeks of "normal", summer weather.  🙂🙂🙂🙂🙂


Gavin S. FRmetS.

TWO Moderator.

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South Cambridgeshire. 93 metres or 302.25 feet ASL.



The Beast from the East
14 August 2026 19:31:00

Factually - there is little sign of any rain here in the south that’s going to make any real difference to the drought in the reliable period 

Originally Posted by: Matty H 

ECM 12z looking very wet for Bristol 


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

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moomin75
14 August 2026 19:37:48

Says the guy that’s been posting summer is over posts since the first heatwave in May….. The summer version of Gloomin

Factually - there is little sign of any rain here in the south that’s going to make any real difference to the drought in the reliable period 

Originally Posted by: Matty H 

I have been far from Gloomin this summer Matty.

Though I reckon winter may be short lived, mild and very wet. (Tongue firmly in cheek here). But what a remarkable summer we're having.


Witney, Oxfordshire

100m ASL

Ally Pally Snowman
14 August 2026 19:51:55

ECM 12z looking very wet for Bristol 

Originally Posted by: The Beast from the East 

Hardly any rain for the South on the ECM 12z Beast 

After 9 days virtually nothing for the South still

https://wetterzentrale.de/en/topkarten.php?map=20&model=ecm&var=18&run=12&time=216&lid=OP&h=0&mv=0&tr=3#mapref 


Bishop's Stortford 85m ASL.
DEW
  • DEW
  • Advanced Member
14 August 2026 20:01:05

ECM 12z looking very wet for Bristol 

Originally Posted by: The Beast from the East 

Arpege giving Bristol a soaking on Tue, but of course it fades out as it moves further S & E. Some of the GEFS ens members are also quite interesting on Tue for Cardiff and Birmingham


I can calculate the movements of stars, but not the madness of men - Isaac Newton

Chichester 12m asl

doctormog
14 August 2026 20:02:44

ECM 12z looking very wet for Bristol 

Originally Posted by: The Beast from the East 

 It’s really not. About 5 mm in the next 7 days and maybe as much as 12 mm in ten days on the accumulated rainfall charts (with the caveat of what we have seen modelled before at that range this summer). 

Possibly wetter than recently, not that it would be difficult, but damp at most.


Jiries
14 August 2026 20:03:22

Hardly any rain for the South on the ECM 12z Beast 

Originally Posted by: Ally Pally Snowman 

12z ensembles also look very dry here all the way just slight spikes in FI as usual.  It will be cooler but settled with average temps at times.  

fairweather
14 August 2026 21:22:58
Met Office saying there is a risk of thundery downpours here "in the early hours". Not widespread but I'll believe it when I see it.
S.Essex, 42m ASL
White Meadows
14 August 2026 21:59:26
The slightly healthier looking rain spikes in my location on yesterday’s ensembles have somewhat diminished today. 

It really is unprecedented to be able to sit on the lawn at night and keep a completely dry bottom. Even in August. 

Ally Pally Snowman
15 August 2026 06:31:34
For the southern third of the UK looks like 3 more days of heat 28c ish . Then a cool down to low 20s maybe 25c at a push. A bit of rain but not much. After that maybe HP builds in again but no sign of more proper heat yet.
Bishop's Stortford 85m ASL.
Crepuscular Ray
15 August 2026 06:56:58
Looking at the FAX charts from a Scottish perspective. Low Pressure begins to influence, gradually moving into western Scotland with fronts and occlusions wrapped up within.

After a mostly fine Saturday, light rain moves into the west tomorrow with more appreciable rain on Monday. Showers, possibly heavy Tuesday & Wednesday. Maybe a 20 C for Aberdeen or Fife today but mostly 14 - 17 C thereafter

Looking at the GFS further ahead. A spell of lighter northerlies and a mid Atlantic High which right at the end of August does push across Scotland


Jerry

Edinburgh, in the frost hollow below Blackford Hill

DEW
  • DEW
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15 August 2026 07:08:15
FAX - decaying fronts moving across from the west today and Monday; then something more active on Tue 18th preceding the LP which moves SE-wards into N Ireland 1000mb Wed 19th.

GFS Op 0z - the LP on Wed forms part of a general area of low pressure stretching across the North Sea. This fills as a ridge of HP sets up and persists across Scotland to the end of the month, by and large dominating Britain except for a two-day wonder of a depression doing a quick traverse from Brittany to East Anglia Mon/Tue 24th/25th with a brief N-ly in its wake.

ECM - agrees with GFS; the LP on Mon 24th covers a larger area of S England.

AIFS - London, maxima drop from 25C now to 18C Sat 22nd; then back up to 23C Wed 26th before dropping again. Rain in traces until Fri 21st when heavier, and then more rain on on Sat 29th. Edinburgh, maxima with similar profile but about 3C lower, rain at times in the coming week, dry for a while, then more on Sat 29th.

GEFS - mean temp (with quite good ens support) still a little above norm until Wed 19th, then near or a little below norm (rather more below for a time in Scotland) to end of month. In England, rain in traces now then rather more Wed 19th and (esp in S) from Sun 23rd onwards. In Scotland, rain on many days from Mon 17th, possibly dry for a few days around Sun 23rd esp in east.


I can calculate the movements of stars, but not the madness of men - Isaac Newton

Chichester 12m asl

Jiries
15 August 2026 07:23:30

For the southern third of the UK looks like 3 more days of heat 28c ish . Then a cool down to low 20s maybe 25c at a push. A bit of rain but not much. After that maybe HP builds in again but no sign of more proper heat yet.

Originally Posted by: Ally Pally Snowman 

If we look closely to end of August on ensembles for here and London there sign of early September heatwave so one to watch and perhaps. final heatwave 7.  For now look very dry, quite  settled and average temperatures.  

bledur
15 August 2026 08:22:28
Looks like it is on the change now,nothing dramatic but conditions in the south will slip to more changeable over next week with the hint of more unsettled next weekend.

Watched a video on YT.Global Storm I think mentioned that everything was just starting to move in the Northern Hemisphere after been set in a pattern for a long time.

bledur
15 August 2026 08:25:11

Looking at the FAX charts from a Scottish perspective. Low Pressure begins to influence, gradually moving into western Scotland with fronts and occlusions wrapped up within.

After a mostly fine Saturday, light rain moves into the west tomorrow with more appreciable rain on Monday. Showers, possibly heavy Tuesday & Wednesday. Maybe a 20 C for Aberdeen or Fife today but mostly 14 - 17 C thereafter

Looking at the GFS further ahead. A spell of lighter northerlies and a mid Atlantic High which right at the end of August does push across Scotland

Originally Posted by: Crepuscular Ray 

Looks like it might be a fine early Autumn in Scotland.Northj of Scotland has been very wet recently so I would expect a switch.

The Beast from the East
15 August 2026 10:06:02

Looks like it is on the change now,nothing dramatic but conditions in the south will slip to more changeable over next week with the hint of more unsettled next weekend.

Watched a video on YT.Global Storm I think mentioned that everything was just starting to move in the Northern Hemisphere after been set in a pattern for a long time.

Originally Posted by: bledur 

yes, late summer monsoon possible with spinning lows coming up from the south.  Shame if the rest of the cricket season is washed out as all the best weather used up by the Hundred 


Purley, Surrey, 70m ASL

"We have some alternative facts for you"

Kelly-Ann Conway - former special adviser to the President

DEW
  • DEW
  • Advanced Member
15 August 2026 12:10:01

yes, late summer monsoon possible with spinning lows coming up from the south.  Shame if the rest of the cricket season is washed out as all the best weather used up by the Hundred 

Originally Posted by: The Beast from the East 

Not on the GFS 06z which has moved the location of the coming anticyclone from N Scotland to S England; the Channel LP noted in this morning's review for the 24th/25th has been deleted


I can calculate the movements of stars, but not the madness of men - Isaac Newton

Chichester 12m asl

Bertwhistle
15 August 2026 12:56:21
GFZ 6z Op has quite a cool anticyclone setting up W of UK around 21st, bringing sub-zero 850s briefly as far south as the Midlands on 23rd.

That'd feel like autumn!

Sadly the upspike in 850s across the Ps shown for the last couple of days around 25th seems to be collapsing, with the Op and Control no longer on board. Plenty of time for a switchback though.


Bertie, Itchen Valley.

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

DEW
  • DEW
  • Advanced Member
16 August 2026 08:12:07
FAX - to start with, some weak fronts crossing Britain, cooler with W-ly winds. LP gets organised 997mb SW of Iceland Mon 17th and moves to North Sea by Thu 20th, switching winds to the north and bringing active fronts possibly as far south as the Channel from late Tue 18th.

GFS Op 00z - following on from FAX, pressure rises W of Ireland and slowly moves eastwards, taking over from the LP and covering Britain 1025mb Wed 26th with return of warmth from the Continent. There is then a contest between HP which tries to establish a ridge from the Atlantic to Denmark and LP which tries to split the ridge into two as it pushes north from France. After some to-ing and fro-ing Britain finishes in a col, with LP 1010mb Normandy.

ECM - like GFS at first but fails to develop the HP area and on Wed 26th Britain is in a shallow trough stretching from Iceland to Spain. GFS offers a new heatwave lasting several days but on ECM it's only a one-day event.

AIFS - London, maxima falling to 18C by Sat 22nd, rising to 22C before falling again Sat 29th. Small amounts of rain this week, heavier Thu 20th, and then more Thu 27th and Sat 29th (Bank Holiday weekend alert!). Edinburgh, similar temp profile as for London but about 3C cooler; some rain this week but a lot from Thu 27th to Sat 29th (about 50mm non-stop over the two days).

GEFS - England, mean temp with good ens support soon dropping to norm or a little below through to Tue 1st (though op takes off towards hot at the end). Rain possible on any day but no consistent forecast as to when (perhaps more likely in SW around Thu 27th). Scotland, similar, but temp 'definitely' rather than 'a little' below norm in the next week; rain more likely than for England and certainly heavy in the west.

No sign of any ex-hurricane arriving to break up the nondescript pressure pattern for the Atlantic. Indeed, NHC has this morning written out a couple of potential disturbances and declared no activity on the Atlantic for the next 7 days.


I can calculate the movements of stars, but not the madness of men - Isaac Newton

Chichester 12m asl

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