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Lapland jump starts autumn

Summer conditions still reign in southern Finland, according to the definition of thermal autumn, which declares that autumn has arrived when average daytime temperatures permanently fall below 10 degrees Celsius.

Rantaan pudonneita lehtiä.
Autumn leaves at the lakeside. Image: Tuula Nyberg / Yle

Since temperatures in Finland have been see-sawing around 10 degrees recently, meteorologists define the start of the autumn season retroactively using computer software. For now, autumn is considered to have set in only in Lapland, said Yle meteorologist Toni Hellinen.

“It’s likely that even a bit further south (than Lapland) autumn has already begun, but because we have to review the data retroactively over several days, we can't be certain whether or not it's here for good,” Hellinen explained.

The Yle meteorologist added that conditions have been warmer than usual across the country. In terms of long-term statistics, the autumn season has lagged by about one week.

On the other hand, last autumn was even warmer: the season began in mid-September in Lapland, and only rolled into the south at the beginning of October.

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