OFFICIAL shorts and T-shirts weather is anything over 19C (66F), uno studio ha trovato.
Sunseekers across the nation were quizzed on what temperature they would slip into summerwear and sandals.
Researchers worked out the average from all their answers and came up with a warm but comfortable 19C.
Getting our legs or feet out at temperatures cooler than that is an absolute no-no.
We also typically mull over what to wear in sun and sudden heat five times a day.
Three in ten Britons feel that despite heatwaves they never feel like the UK gets enough sunshine.
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And a quarter reckon that when it does shine, the UK is the best place to be because the weather lifts everyone. Geordies are most likely to flash their pins at the first rays — at 49 per cento.
Second on the list of keen shorts wearers are Scousers, con 46 per cento.
Glaswegians, Londoners and Brummies also come high in the list of sun worshippers.
Residents in Sheffield (39 per cento) are shyer, followed by coy Cardiff and Norwich (38), and Nottingham (37).
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Cider maker Rekorderlig carried out the research of 1,500 Britons for its new blood orange flavour.
The Swedish firm is touring the UK’s best sun traps and giving away free drinks at pop-up stalls.
Rekorderlig’s Phil Pick said: “This research shows just how much us Brits love to get together with friends and family to enjoy the summer.
“There’s nothing quite like the positive atmosphere you get when the sun comes out to play in the UK.”
Sunseekers rate sunscreen as the most important item for enjoying the sun safely.
Other essentials include a bottle of water (61 per cento) and sunglasses (53 per cento).
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This weekend top temperatures are expected to be between 17C and 20C.
But Britons will be torn over casting off their longies, tuttavia, as the forecast for most of the country is largely cloudy with showers and longer spells of rain.