Starting on Tuesday, much of Finland is set to get wetter, colder and windier, according to Yle forecasters.
"I'd rather not say this in mid-August, but it seems that Autumn is coming. Rain, wind and cool temperatures are in store," Yle meteorologist Anniina Valtonen said on Tuesday afternoon.
The first precipitation of the weather system began on Tuesday at around 3pm, and will gradually and uniformly spread across southern Finland into the evening.
After midnight, the Helsinki metropolitan area will be quite rainy," Valtonen said.
A low-pressure system over the Gulf of Bothnia, along the west coast, will spread north, bringing rain across the entire country on Wednesday.
"On Wednesday afternoon, Lapland will get heavy, steady rain. There will be quite intense thunderstorms in the south and west, which will later move northward," she said.
Thursday and then into weekend
The rain and thunderstorms are expected to continue into Thursday across the country, but they will be less intense as the previous day's deluge.
Temperatures will drop across the country as well, ranging from 15 to 20 degrees Celsius. But it will be cooler when it's raining, Valtonen explained.
The heaviest rain on Wednesday is expected in regions west of the cities of Helsinki, Lahti, Jyväskylä and Nivala.
"There, rainfall could reach 20 to 50mm. In the east and north, rainfall levels between 5 to 20mm," she said.
Strong winds are also in store, according to Valtonen, with gusts gradually increasing in strength during the course of Tuesday night, with wind speeds of 15m/s expected.
It will be even windier on Wednesday night, when even stronger winds are expected, with wind speeds exceeding 20m/s are expected in coastal areas.
The low-pressure system will continue to cause rainy conditions into the weekend, but Saturday's precipitation is primarily expected in southern and eastern areas.
Meanwhile, regions in the north and west will likely get rain on Sunday, according to Valtonen's forecast.