Met Office Hadley          12.5c       Anomaly     1.6c. Provisional to 23rd.

Metcheck                       12.73c     Anomaly     1.33c

Netweather                     12.9c      Anomaly     1.67c

Mansfield Woodhouse      12.8c      Anomaly     0.14c

Peasedown St John          14.9c     Anomaly      1.08c.

Mean Temperature Of My 10 Watched Stations    13.66c.    

Met Office Hadley            12.6c.         Anomaly       1.7c. Provisional to 24th.

Metcheck                         12.79c        Anomaly        1.38c

Netweather                      12.94c        Anomaly        1.64c  

Cheadle Hulme                13.4c        Anomaly        0.6c

Mount Sorrel                   13.7c        Anomaly        1.3c 

Peasedown St John        14.8c        Anomaly        1.88c

Treviskey  Redruth         11.6c       Anomaly         =0.88c      

My average May temperature has remained broadly steady since the 8th after a chilly start to the month. Currently at 13.50c. The graph will climb in the next 5 or 6 days. I'm expecting a 14.2c average here to finish the month. 

And I reckon the overall CET will now hit 13.0C

Met Office Hadley            12.6c.        Anomaly       1.7c. Provisional to 25th.

Metcheck                         12.82c       Anomaly       1.41c.

Netweather                      12.97c       Anomaly       1.68c

Alton                              12.9c         Anomaly       1.4c

Canvey Island                  14.9c        Anomaly        -0.2c

Cheadle Hulme                13.6c        Anomaly        0.6c

Clevedon Weather            13.5c       Anomaly        0.22c

Darwen                           14.5c       Anomaly        1.76c

Hexam                            13.6c       Anomaly        1.38c

Mount Sorrel                    13.7c      Anomaly        1.3c

Mansfield Woodhouse        12.9c      Anomaly        0.24c

Peasedown St John           14.8c      Anomaly        1.88c

Treviskey Redruth            11.7c      Anomaly        0.78c.

Mean Temperature Of My   Watched 10 Stations    13.5c.         

Agreed Gavin. 

Interesting spread Art; Canvey Island and Peasedown impressive- might hit the magic 15.

Met Office Hadley            12.8c.         Anomaly       1.8c. Provisional  to  26th

Metcheck                         12.97          Anomaly       1.56c

Netweather                      13.12c        Anomaly        1.83c

Cheadle Hulme                13.7c          Anomaly        0.7c

Canvey Island                 13.6c          Anomaly        0.38c

Peasedown St John          15.0c          Anomaly        2.08c

Treviskey Redruth            11.8c         Anomaly         0.68c.    

Met Office Hadley           13.0c.          Anomaly      1.9c.  Provisional to 27th.

Metcheck                        13.12c         Anomaly      1.71c.

Netweather                     13.3c           Anomaly      2.01c

Cheadle Hulme Weather  14.00c           Anomaly     1.60c

Clevedon Weather            13.8c           Anomaly      0.52c

Mount Sorrel                    13.9c            Anomaly     1.5c

Peasedown St John         15.0c           Anomaly      2.08c

Treviskey Redruth          12.05c          Anomaly      0.43c.

Met Office Hadley            13.4c.        Anomaly        2.8c. Provisional to 28th.

Metcheck                         13.18c.      Anomaly        1.79c.

Netweather                      13.42c.      Anomaly        2.12c.

Cheadle Hulme Weather  14.2c.        Anomaly        1.2c.

Clevedon Weather           14.0c.       Anomaly        0.72c.

Mount Sorrel                   14.0c.       Anomaly       1.6c

Peasedown St John        15.5c.       Anomaly        3.02c.              

Says 13.1C and anomaly of 2.1C here - maybe it was wrong before?

http://hadobs.metoffice.com/hadcet/cet_info_mean.html

Met  Office Hadley            13.2c.          Anomaly         2.2c. Provisional to 29th

Metcheck                          13.24c         Anomaly         1.84c 

Netweather                       13.49c         Anomaly         2.2c.

Cheadle Hulme                 14.3c          Anomaly         1.3c

Clevedon Weather             14.1c         Anomaly          0.82c

Mount Sorrel                    14.1c         Anomaly          1.7c

Peasedown St John           15.6c         Anomaly          2.68c.

A very big contrast between maximums and minimums this month.

Currently the provisional maximum CET is 18.6C (3.2C above the 1961-1990 mean) which is the joint second highest on record only beaten by 1992 with 19.0C. 2017 also saw a very high maximum CET in May with 18.0C.

The provisional minimum CET is 8.0C which is just 1.3C above the long run mean.

So although the overall CET mean will not be any higher than the 13.2C last year it has been much warmer by day this year.

There have been lots of years since 1989 with a CET of 13C or more but never higher than 13.6C. There have been several instances of the May CET getting to between 13.6C and 13.9C going way back to the 1700's so it is surprising we have not managed to beat that recently. Of course the May CET record is a bit like the new December record as it is way ahead of any other May ever. The 15.1C recorded in 1833 is truly remarkable.

June thread coming up shortly.

Current monthly mean temperature is 14.0°C to the end of the 30th.

At first thought, that contrast would suggest clearer skies across C England generally. Any thoughts on the representative sunshine hours across the CET triangle?

My mean maximum up to yesterday (30th) was 20.3C. With the temperature now at 19C, that figure looks more or less likely to be maintained. My mean for the month will therefore be close to 15C.

Met Office Hadley             13.3c.        Anomaly       2.2c.   Provisional to 30th.

Metcheck                          13.32c       Anomaly       1.91c

Netweather                       13.53c       Anomaly       1.5c

Alton                               13.15c       Anomaly        1.5c     3 year 

Canvey Island                  14.5c         Anomaly        0.6c     5 year

Cheadle Hume                  14.3c        Anomaly        1.3c     5 year 

Clevedon Weather             14.1c        Anomaly        0.82c   5 year

Darwen                            16.9c        Anomaly        4.21c   5 year

Hexam                             17.3c        Anomaly        5.50c   5 year

Mount Sorrel                     14.2c        Anomaly        1.8c    5 year

Mansfield Woodhouse         13.0c        Anomaly        0.34c  3 year

Peasedown St John             15.5c       Anomaly        2.38c   5 year

Treviskey Redruth               11.5c.      Anomaly       -0.98c.  5 year

Mean Temperature  Of My 10  Stations 14.45c.  

What an amazing May . Well in excess of 13.0C I'm stuffed with my CET forecast - But never mind what an amazing last 3 weeks this has been.

Yes it has indeed been an amazing month with both Bank holidays being glorious as well.  I think only the first couple of days were cold and then during mid month we had two nights just short of frost but with warm days. We’ve had lots of sunny days and very little rain here. 

Generally above average sunshine totals. I don't have many stations to hand that are directly in the CET triangle. But a few representative stations from inland England are as follows:

North east - Leeming - 138%

Central west - Shawbury - 137%

Central east - Wittering - 127%

Generally good sunshine across the board. Bournemouh Hurn in the south had 136% and Lerwick in the far north 128%.

Only place I can immediately see that is slightly below average is Camborne in Cornwall with 96%.

Also the third consecutive May to record a mean over 13C.