The Weather Outlook

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scillydave
28 August 2026 20:26:15
It's that time of the month again - and after THAT Summer who knows what's next as we head into Autumn. Early indications show a warmer than average start to September but then how often is  month not warmer than average these days?!

My feeling is for another very warm one at 15.85c

A usual predictions by email to [email protected] by midnight on the 31st August. 

Stats

All time CET for September is 13.37c

1991 - 2020 CET for September is 14.18

Last year was 14.09

All time highest

2023  17.00c

2006  16.90c

1729  16.60c

1949  16.30c

1865  16.3c

All time Lowest

1807  10.50c

1675  10.50c

1674  10.50c

1694  10.50c

1703  10.60c

1991 - 2020 period

highest

2006  16.90

2016  16.10

1999  15.60

2005  15.20

2011    15.10

Lowest

1993  12.30

1994  12.70

2015  12.70

2012  13.00

2001  13.50


Currently living at roughly 65m asl North of Cowbridge in the Vale of Glamorgan.

Formerly of, Birdlip, highest village in the Cotswolds and snow heaven in winter; Hawkinge in Kent - roof of the South downs and Isles of Scilly, paradise in the UK.

Hungry Tiger
30 August 2026 14:12:07
Just stickied it for you Dave.  🙂🙂🙂🙂
Gavin S. FRmetS.

TWO Moderator.

Contact the TWO team - [email protected]

South Cambridgeshire. 93 metres or 302.25 feet ASL.



Ally Pally Snowman
30 August 2026 14:58:59
It was pretty obvious July and August were going to be hot, but it's not so obvious with September. AIFS looking the most optimistic for settled warmth. 
Bishop's Stortford 85m ASL.
Hungry Tiger
30 August 2026 15:10:51
I don't think this September will be as warm as we originally thought. However,  I'm going for. 

15.0C. So a bit above average.  🙂🙂🙂


Gavin S. FRmetS.

TWO Moderator.

Contact the TWO team - [email protected]

South Cambridgeshire. 93 metres or 302.25 feet ASL.



scillydave
30 August 2026 16:18:25

Just stickied it for you Dave.  🙂🙂🙂🙂

Originally Posted by: Hungry Tiger 

Thanks Gavin, much appreciated. 


Currently living at roughly 65m asl North of Cowbridge in the Vale of Glamorgan.

Formerly of, Birdlip, highest village in the Cotswolds and snow heaven in winter; Hawkinge in Kent - roof of the South downs and Isles of Scilly, paradise in the UK.

Bolty
30 August 2026 17:17:46
I'll go for 15.6. A warm, but potentially unsettled month.
Scott

Blackrod, Lancashire (4 miles south of Chorley) at 156m asl.

My weather station 

Gavin D
02 September 2026 13:03:16
Hadley

15.8 to the 1st

2.2c above the 61 to 90 average

0.6c above the 91 to 20 average

Retron
03 September 2026 12:34:54
And there we have it - if the rest of the year is even 0.01C above average, we'll have a new hottest year. (And the record went last year!)

"The highest annual mean CET ever recorded was 11.23, which is 1.76 higher than normal.

To beat this record the anomaly must be higher than 0.0 for the remainder of this year."


Leysdown, north Kent
Gavin D
03 September 2026 12:48:49
Hadley

16.2 to the 2nd

2.6c above the 61 to 90 average

0.9c above the 91 to 20 average

Gavin D
04 September 2026 12:28:32
Hadley

17.3 to the 3rd

3.8c above the 61 to 90 average

1.9c above the 91 to 20 average

Gavin D
05 September 2026 13:52:02
Hadley

17.2 to the 4th

3.7c above the 61 to 90 average

1.8c above the 91 to 20 average

Gavin D
06 September 2026 12:57:30
Hadley

17.0 to the 5th

3.5c above the 61 to 90 average

1.6c above the 91 to 20 average

Gavin D
07 September 2026 13:15:08
Hadley

17.2 to the 6th

3.7c above the 61 to 90 average

1.9c above the 91 to 20 average

Gavin D
08 September 2026 13:07:18
Hadley

17.4 to the 7th

3.8c above the 61 to 90 average

2.1c above the 91 to 20 average

Gavin D
09 September 2026 13:22:45
Hadley

17.0 to the 8th

3.4c above the 61 to 90 average

1.8c above the 91 to 20 average

scillydave
10 September 2026 11:40:52
Abject apologies for the very late posting of this months predictions - without further ado, here they are:

September CET Predictions

WindyWillow            16.33

Redmoons                16.15

Ally Pally Snowman  16.1

Scillydave                  15.85

DingleRob                15.8

Stormchaser             15.61

Magda                     15.6

Bolty                         15.6

Rick M                     15.55

Spring Sun Winter Dread 15.3

Kendalian               15.3

GezM                      15.25

Caz                         15

Grandad                 15

Hungry Tiger          15

Wallaw                   14.9

Sussex snow magnet 14.9

Dickieboy68          14.86

Jemblow                14.8

Lanky                     14.42

Snowshoe              14.4

Domma                  14.25

September CET     13.37

SaintSnow


Currently living at roughly 65m asl North of Cowbridge in the Vale of Glamorgan.

Formerly of, Birdlip, highest village in the Cotswolds and snow heaven in winter; Hawkinge in Kent - roof of the South downs and Isles of Scilly, paradise in the UK.

Gavin D
10 September 2026 13:02:43
Hadley

16.7 to the 9th

3.1c above the 61 to 90 average

1.5c above the 91 to 20 average

Gavin D
11 September 2026 13:03:14
Hadley

16.4 to the 10th

2.8c above the 61 to 90 average

1.3c above the 91 to 20 average

Gavin D
12 September 2026 13:09:02
Hadley

16.4 to the 11th

2.8c above the 61 to 90 average

1.3c above the 91 to 20 average

Gavin D
13 September 2026 13:35:56
Hadley

16.3 to the 12th

2.7c above the 61 to 90 average

1.2c above the 91 to 20 average

Gavin D
14 September 2026 12:38:58
Hadley

16.4 to the 13th

2.8c above the 61 to 90 average

1.4c above the 91 to 20 average

TimS
  • TimS
  • Advanced Member
14 September 2026 15:36:48

Hadley

16.4 to the 13th

2.8c above the 61 to 90 average

1.4c above the 91 to 20 average

Originally Posted by: Gavin D 

Today's a particularly warm and muggy one in all 3 CET sites. CET max 23.4C, min 15.4C, mean 19.4C. Maxes may yet creep up a bit more.

That would bring tomorrow's month to date figure to at least 16.6C. Then another warm night to come before the next few days see it declining a bit.

 


Brockley, South East London 30m asl
Hungry Tiger
14 September 2026 22:31:01
I think I've gone too low. Next week is looking more like a good heat burst with at least one model showing 30C or 31C. Incredible if it comes off. 🙂🙂🙂
Gavin S. FRmetS.

TWO Moderator.

Contact the TWO team - [email protected]

South Cambridgeshire. 93 metres or 302.25 feet ASL.



Ally Pally Snowman
15 September 2026 08:16:12
Some of the output atm suggests the record could go. 17c to beat. If the nights stay mild then 17.5c I think is possible. 
Bishop's Stortford 85m ASL.
Gavin D
15 September 2026 12:42:57
Hadley

16.6 to the 14th

3.1c above the 61 to 90 average

1.7c above the 91 to 20 average

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