Warm winds from the southeast are behind the expected rise in temperatures. Härenstam explains the heat by a counter-clockwise low-pressure system over the Atlantic interacting with a clockwise high-pressure system over Russia.
Then we get warm air from far to the south, she says.
Härenstam emphasizes that there is still too much time left to give an exact forecast of which day will be the warmest, or how long the warm spell will last.
Between Tuesday and Friday there may be a few days with temperatures reaching almost 20 degrees. But it could be anything from one day to three days.
