At several weather stations, the temperature has risen to over 18 degrees, and in Uusimaa this year's heat record was also broken.

19.8 degrees were measured in Lohja, says Heikki Sinisalo, a meteorologist on duty at the Finnish Meteorological Institute.

The weather continues to warm, and from tomorrow Finland will have extensive summer temperatures and sunny weather.

With these prospects, the warmest day of the week is expected on Thursday, when the heather border can often be broken in places in Central Finland, Northern Ostrobothnia and Kainuu.