Press release archive: 2016

Summery weather continued into September

10.10.2016 16:58

For the eighth time in succession, September in Finland was warmer than normal.

Photo: Eija Vallinheimo

Photo: Eija Vallinheimo

According to the Finnish Meteorological Institute's statistics, September was 1 to 2 degrees warmer than usual and in North-West Lapland it was as much as 2 to 4 degrees warmer. September last year was even a little warmer than this year. The highest temperature recorded in September was in Kumpula in Helsinki where a temperature of 23.2 degrees was measured on the 7th September and the lowest temperature was measured at -5.3 degrees on the 18th September in Naruska in Salla. The summery weather continued long into September; the last time the temperature exceeded 20 degrees was on the 15th of the month and on the 27th, the temperature was above17 degrees as far north as Oulu.

In comparison with the normal figures, this September it rained most in Lapland, where the 50 to 80 millimetres of rain were about one and a half times the long-term average. Elsewhere in the country the amount of rain was generally one third less than the normal figure. In the southwest of the country the amount of rain was unusually low in places; something which happens on average once every 10 years. The most rain recorded in September was 100.6 mm in Koivuniemi in Virolahti and the lowest figure was 8.8 mm on the island of Utö. The most rain to fall in a twenty-four hour period was in Tapiola in Espoo, where 60.1 mm was recorded on the 3rd of the month.

The September rainfall figures do not tell the whole story about the amount of rain in September as there were exceptionally few rainy days in parts of the south and west of the country. For example; at Helsinki-Vantaa airport, there were only four rainy days whereas there would typically be about 16.

Further information:

Weather statistics from the Climate Service tel. +358 600 1 0601 (€4.01/min + local charges)
Weather forecasts from the meteorologist on duty 24 h/day tel. +358 (0)600 1 0600 (4.01 e/min + local charges)

http://ilmatieteenlaitos.fi/ilmasto
http://www.ilmastokatsaus.fi/