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Warmest May in more than 30 years: 13 days of +25-degree Celsius highs

The last time such a sustained period of warm weather was recorded was 34 years ago.

Näkymä Seurasaaresta Seurasaarenselle kauniina päivänä.
It's been 13 days and counting and there seems to be no end in sight to the current warm conditions. Image: Esko Jämsä / AOP

The month of May has proven to be one for the history books, as meteorologists have so far recorded 13 straight days of temperatures in the mid-20s.

According to the Finnish Meteorological Institute FMI, the previous record was set in 1984 when there were 12 consecutive days of daytime highs at or in excess of 25 degrees Celsius, a uniquely Finnish threshold for describing weather as “hot”.

The highest temperature measured this month was 29.6 degrees Celsius, detected on 15 may in Kemiö. However the highest temperature ever recorded in May was 31 degrees, measured at the end of May in Lapinjärvi back in 1995.

On Monday, the mercury crept above the 25-degree mark in Lammilla, Hämeenlinna, Pelmaa in Seinäjoki, at the Niinisalo airfield in Kankaanpää at the Ylivieska airport and in Haapavesi’s Mustikkamäki district.

The readings were highest in Lammilla and Ylivieska at 25.2 degrees while the highs clocked 25.1 degrees at the other locations, according to FMI.

The meteorological institute began collecting temperature records back in 1959.

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