According to a forecast from the Danish Metereological Institute (DMI), a front of hot air will move over Denmark on Wednesday evening.
“The combination of the warm air and largely cloudless weather will give rise to heatwaves in parts of the southern and eastern areas of the country,” predicted meteorologist Lars Holtmann.
According to the broadcaster TV2, if 30C temperatures are recorded on Thursday, it will be the earliest so-called “tropical day” in 14 years. A tropical day is defined as a day when 30C is recorded somewhere in Denmark.
The broadcaster also predicted that there might be “tropical nights”, defined as a night when the temperature does not fall below 20C.
The hot spell is expected to climax in thunderstorms over the weekend, with cooler weather resuming next week.
“The collision of the cooler air from the west and the very hot air mass from the east provides favourable conditions for strong thunderstorms to form,” TV2 explained. “Right now, the greatest risk is in Jutland.”