“The water is record warm, or at least we haven't registered a swimming day so earlier in the last decade, and the water is only going to get hotter over the coming days,” said Peter Tanev, a meteorologist with the TV2 broadcaster.
Denmark is set to see temperatures of as much as 30C in the south of Jutland on Saturday as the whole of Europe is hit by a heatwave.
With water temperatures tending to rise by half a degree a day during sunny periods, water temperatures could rise beyond 22C over the weekend.
- Europe sizzles as temperatures rise towards 40C
- 'Winter that never arrived' nears end for Nordic countries
- Summer 2019 was Denmark’s ninth-warmest ever
“It has been an extremely sunny spring,” Tanev explained. “The sun's rays are the most important factor when it comes to warming up the water.”
He said that the generally mild winter had also helped push temperatures at the country's bathing stops towards the near record.
In 2017, the water at Denmark's beaches never averaged above 19C, and in 2018, swimmers had to wait until the end of June. But 2019 was another record year, with the first swimming day registered on June 23rd.