From the BWS website "a typical year" in Coventrty

Although wetter and cloudier than July, August is often warm and
humid. With the seas around the country at their warmest, it is rarely
a cool month; 1912, 1924, 1931 and 1946 being the exceptions. Here as
a result of cold, wet, slow moving depressions from the west.

More usually the Azores high pressure exerts its influence, though the
sun is less powerful now, so by month's end there is an autumnal feel
to the weather. It is a potentially thundery month, especially after a
hot, dry, sultry first few days. Witness the record heat (35.1°C) on
3rd August 1990. 21°C is a more normal daytime average for August in
Coventry, with 26°C the maximum on the month's hottest day. Four of
the ten warmest August months have occurred in recent years - 1990,
1995, 1997 and 2003.

It is though, the wettest month of the year in Coventry, though only 8
wet days are expected. Heavy, thundery rain is expected to produce
22mm of rain on at least one day. The 1970's was the wettest recent
decade for August (80mm), with the 1940's and 1990's the driest
(56mm).

The 1960's must have been a miserable decade temperature-wise, with an
average temperature for August of just 15.2C! Once again we find that
those years recorded the coldest decadal mean for the city, with a
definite recovery by the 1980's (16.3C) back to the levels of the
1930's. By the 1990's, August saw a further one degree rise in average
monthly temperatures, and so far the mean since the Millennium for
August has been 17.4C.

The 1960's was also the dullest August decade (145.8hr), with the
1990's the sunniest (205.1hr). The first years of the 21st century
have only averaged 169.0hr of August sunshine in our region.

Just off to dinner with my wife:-)

Steve Jackson
Bablake Weather Station
Coventry UK
www.bablakeweather.co.uk