Statistics covering the normal 30-year period

The table below gives statistical information about freezing and break-up of ice cover. The observation points given are located off harbours and the list progresses from the north to the south and to the east. The values given are averages of the normal meteorological 30-year period 1961 - 1990.

The names of the harbours are given in bold.

For more detailed information see:

'Seinä, A. and Peltola, J. , 1991: Jäätalven kestoaika ja kiintojään paksuustilastoja merialueilla 1961-1990 / Duration of the ice season and statistics of fast ice thickness along the Finnish coast 1961-1990. Finnish Marine Research, N:o 258.'