The Finnish Meteorological Institute (FMI) said on Tuesday that it is still considering whether to issue a heavy rain warning on Friday and Saturday.
The rain is expected to begin on Thursday, with heavy downpours forecast to start across areas of Northern Ostrobothnia and Central Finland, and then spread south throughout the day Friday, likely giving half of the country a substantial two-day soak.
FMI meteorologist Juha Tuomola said that the heaviest rains will likely take place across the Tavastia Proper region in the south, eastwards to northern Karelia, and from the Päijänne Tavastia region towards southern Karelia.
“Friday’s temperatures will be around 13-17 degrees Celsius,” Tuomola said.
One month’s rain over a few days
Projected daily rainfalls of 50 millimetres are expected on both Thursday and Friday.
The amount of rain forecasters think will fall this week is roughly double the amount of rain that Finland gets during the entire the month of June (which typically features rainfall averages of 40-80 millimetres).
On Saturday the precipitation system will likely move further east.
Yle forecasters said on Tuesday that city of Kuopio (central Finland), for example, may end up getting a total of about 100 millimetres of rain between Thursday and Sunday.
Related stories from around the North:
Finland: Finland expecting less blue-green algae blooms than in previous years, YLE News
Norway: Norway’s Arctic islands crush May heat records, The Independent Barents Observer
Russia: Record heatwave in the Arctic, The Independent Barents Observer
Sweden: Sweden faces midsummer strawberry shortage due to unfavourable weather, Radio Sweden