“Concern” has been voiced by the UN weather agency for the ice sheets in Greenland as a heatwave that swept through Europe makes its way north.
Heat records in France, Belgium, Netherlands and Germany all peaked in recent days after hot air surged from North Africa and Spain.
The UK also saw its hottest day of the year as the capital baked in a sweltering 38.1C.
World Meteorological Organisation spokeswoman Clare Nullis said in Geneva that forecasts suggest the air is heading towards Greenland.
This, she said, "will result in high temperatures and consequently enhanced melting of the Greenland ice sheet".
Ms Nullis said ice has been melting at high levels over the last few weeks in Greenland.
It could reach close or below the record low seen in 2012, the United Nations said on Friday.
Meanwhile, Belgium suffered a first death as a direct result of the record-breaking heat wave when a woman was found dead near her caravan close to the beach.
The 66-year-old woman was found by a neighbour late on Thursday afternoon after she had apparently been basking in the blazing sun.
The incident happened in Middelkerke on the Belgian coast as temperatures rose in the region to over 40C (104F).
Three people also drowned in London, urging the London Fire Brigade to put out a warning to swimmers trying to cool down in open water.
