Swedes in the northern town of Lulea make the most of record temperatures.
(SOUNDBITE) (Swedish) LULEA RESIDENT, MARIA ROS PALMKLINT, SAYING:
".. it's absurdly warm. It's fantastic. I'm just enjoying it."
The month of May in Northern Sweden has been one of the hottest since records began.
On Friday temperatures in Kiruna - 145 kilometres north of the Arctic circle - were set to reach 26 degrees.
(SOUNDBITE) (Swedish) STUDENT, HANNA HJERTONSSON, SAYING:
"I don't think I've ever been for a swim this early, ever, since I was little."
The warm weather isn't set to continue, however.
According to forecasts, temperatures will return to normal over the next few days.