In Warsaw, the thermometer showed 18.9 degrees on Sunday, 4 degrees more than what has ever been measured in the Polish capital in January.
Bilbao, Spain had 25.1 degrees, the same as the average temperature usually is in July and more than 10 degrees above the normal average for January, according to BBC.
Other parts of Spain are also experiencing high temperatures, and in parts of Catalonia, including Barcelona, restrictions on the use of water have been introduced.
New records
Record high temperatures have also been recorded in the Netherlands, Liechtenstein, Lithuania, Latvia, the Czech Republic, Denmark and Belarus in recent days, and record heat has also been measured in regions in Germany, France and Ukraine.
The new January record in Belarus is 16.4 degrees, around 4.5 degrees more than what has ever been measured in January.
In Switzerland, too, the thermometer has shown over 20 degrees, and there is exceptionally little snow at the ski resorts in the Alps this year.
Shrinking glaciers in the Alps could eventually threaten the water supply of several European countries, experts warn.
The hottest ever
The UK, Ireland, France and Spain recently found that 2022 was the warmest year on record.
Man-made climate change is blamed for the fact that heat waves are becoming increasingly powerful, more frequent and longer lasting.
The average global temperature has risen by 1.1 degrees since pre-industrial times, and according to the World Meteorological Organization (WMO) there is a 50 percent chance that it will exceed 1.5 degrees in the next five years.
In the Paris Agreement from 2015, the countries of the world agreed to limit global warming to “well below” 2 degrees, compared to what was measured between 1850 and 1900.
