July 2019: a new Tmax record

July 2019 saw the month’s daily maximum record broken on the 25th with a high of 36.8C, The reading beat the previous record set on July 1st 2015 by 0.8C and was the second highest reading recorded in this area. Cloud that drifted in mid afternoon put paid to any chance of all-time record though Cambridge, further north, managed to break the UK record with a reading of 38.7C. This temperature set in the Botanic Gardens beat the previous record of 38.5C set in Brogdale, Kent, in 2003.

 

north
The weather enclosure in the Cambridge Botanic Gardens meets WMO guidelines

Although it has been mentioned that the Cambridge site appears to be overdeveloped it meets the WMO standard and the Met Office are happy with the record.

Compared with 2003 the heat this time was far more widespread and further north, with many stations recording higher values than 2003, as shown by these 24 hours to 6pm readings below.

 

In 2003 some 44 stations recorded 30C or above whereas this year some 67 reached 30C or higher.

Though the heat was record breaking it was much shorter lived than 2003. Like last month and July 2015 the 9-day temperature trace is far more ‘pointed’ – perhaps a symptom of the changing behaviour of the jet stream.

Overall the monthly mean finished 19.9C, that’s 1.4C above average though 1.8C cooler than last July – the warmest month on record.

Rainfall at 61.5mm, was 141 per cent of average,  the wettest for 2 years. Sunshine, at 165hrs, is 85 per cent of average and well down on last July’s 273hrs.

To view full stats follow this link:http://1drv.ms/1kiTuzv

2019july
‘Feels like’ maxima.
juky feels
June 1981-2019 maximum anomalies
july all.PNG

 

The 12 month rolling rainfall total is…

Summary for July 2019

Temperature (°C):
Mean (1 minute)  19.8
Mean (min+max)   19.9
Mean Minimum     14.7
Mean Maximum     25.1
Minimum          9.2 day 03
Maximum          36.8 day 25
Highest Minimum  19.6 day 23
Lowest Maximum   19.5 day 27
Air frosts       0
Rainfall (mm):
Total for month  61.5
Wettest day      20.6 day 19
High rain rate   16.1 day 18
Rain days        10
Dry days         21
Wind (mph):
Highest Gust     16.8 day 20
Average Speed    2.2
Wind Run         1664.1 miles
Gale days        0
Pressure (mb):
Maximum          1029.0 day 03
Minimum          1004.8 day 30
Days with snow falling         0
Days with snow lying at 0900   0
Total hours of sunshine        0.0
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