According to the statistics of the Finnish Meteorological Institute, October was unusually warm throughout the whole country and exceptionally warm in some places. Average temperatures for the month varied between approximately 0 degrees in Enontekiö and +10 degrees in the Southwest Archipelago.
October was between 1 and 2.5 degrees warmer throughout the country than the average for the reference period 1991-2020.
At many observation stations in the Gulf of Finland, the average temperature in October was the warmest in the station's measurement history. The high air temperatures in the Gulf of Finland are explained by the fact that sea water has been very warm in October. Surface water temperatures were approximately 2 degrees above the long-term average.
