August 1956 was very cool with a CET of 13.5 and it was also wet with an EWR of 158.6mm
Some notable events of the month were:
5th: 60mm fell during a storm at Swanage in 1 hour.
6th: 45mm fell at Arundel Castle in 18 minutes
Hailstorm left 30cm+ deep in Tunbridge Wells, 81mm fell at Faversham
18th: 50mm+ fell across many western parts and northern parts as a deep low moved through northern England
25th: 75mm+ fell on parts of Somerset.
Low pressures, one after another moved through the UK during the month and there was hardly one day where high pressure had total control over the UK until the very end of the month
Here's some data from the month
Mean Max: 14.7 (-2.7) Highest Max: 17.8 Rainfall: 83mm (108%)
Mean Max: 16.1 (-2.4) Highest Max: 18.9 Rainfall: 117mm (127%)
Mean Max: 14.5 (-2.7) Highest Max: 19.4 Rainfall: 226mm (173%)
Mean Max: 14.6 (-3.0) Highest Max: 20.6 Rainfall: 159mm (227%)
Mean Max: 16.9 (-2.5) Highest Max: 21.7 Rainfall: 201mm (240%)
Mean Max: 16.9 (-3.4) Highest Max: 20.6 Rainfall: 152mm (214%)
Mean Max: 17.1 (-3.2) Highest Max: 20.0 Rainfall: 112mm (170%)
Mean Max: 18.2 (-3.3) Highest Max: 21.7 Rainfall: 93mm (163%)
Mean Max: 16.1 (-2.1) Highest Max: 20.6 Rainfall: 161mm (171%)
August 1956 was a fairly thundery month over England and Wales
Number of days with thunder
But not so over Scotland
Not surprising the summer of 1956 made news for all the wrong reasons with film footage of deserted windswept beaches, people struggling to stay upright in the strong winds, children and adults having "hail ball" fights and workmen clearing the hail that struck Tunbridge Wells with shovels.
Across the whole of the UK, September 1956 was warmer than August 1956