Temperatures half what they were this time last year will end a month of "extreme" weather in the UK, which has included two named storms, a heatwave, and the hottest August day recorded in 17 years.
The Met Office said that although the bank holiday has been "unseasonably cool", the low temperatures are not expected to break any records.
The mercury will struggle to exceed 17C in London though, with sunshine in short supply. The chilly spell is in stark contrast to last year's late August Bank Holiday Monday which was the hottest on record, when the mercury hit 33.2C at Heathrow airport.
Alex Burkill, meteorologist at the Met Office, said that the variety of hot, cold and windy weather would likely not be reflected in the monthly averages.
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