Finland is set for a spell of unseasonably warm temperatures over the coming days, according to Yle meteorologist Matti Huutonen.
A high-pressure front moving in from the east will keep temperatures higher than usual for this time of year, Huutonen explained.
Although Tuesday evening will see a scattering of rain showers and thunderstorms, temperatures during the day on Wednesday are expected to climb above 25 degrees Celsius in southern and southeastern parts of the country.
Finland's official 'heatwave' threshold is 25 degrees Celsius, and that is expected to be breached in at least some part of the country every day for the remainder of this week.
"It will be warmest on Wednesday and Thursday, but the rest of the week will see summer temperatures too," he said.
Usually, in September, the average daily temperature drops significantly below that 25 degrees threshold, and can even fall close to zero during the nights.
However, nighttime temperatures this week are expected to stay at about 15 degrees, even in northern areas.
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