Mean temperature change 

Updated: 1.3.2018 - Next update: 1.6.2018

Winter was mild despite a cold February

Winter (December-February) was 1-3 degrees milder than average in most of the country. Only in Northern Lapland the anomaly was approximately one degree Celsius. February was 1-4 degrees colder than average, but December and January on the other hand were milder. Winter 2018 was the fifth consecutive winter when temperatures were higher than average in most of the country.

The coldest temperature -37,1 Celsius was measured in Utsjoki on February 4th and the highest of +7,2 Celsius was measured on December 7th in Kökar.

Finnish Meteorological Institute

Description of indicator

Following the evolution of mean temperatures gives information on the progress of climate change. There are many factors that affect the temperatures. Annual and decadal temperature oscillations are related to changes in different weather types. Occasionally we get mild weather from southerly and westerly flows and occasionally colder weather from the north.

Finnish temperatures have risen approximately one degree Celsius since early 20th century. In Helsinki the urban heat island effect amplifies the warming trend. The temperature rise is not constant and it is partly obscured by the large natural variability which is characteristic for Finland. Globally however the temperature rise of over half a degree Celsius in the 20th century is statistically significant.