Europe endured record heat and rainfall last year while temperatures in Arctic Siberia soared off the charts, the European Union's climate monitoring service has reported.

The continent in 2020 was nearly half a degree Celsius hotter than the next warmest year, according to the Copernicus Climate Change Service (C3S).

That means Europe was more than 2C warmer than in a world unaltered by carbon emissions from burning fossil fuels and far above the temperature limits enshrined in the Paris climate accord.

The 2015 treaty enjoins nearly 200 nations to cap global warming at "well below" two degrees compared to mid-19th century levels, and 1.5C if possible.

Globally, average surface temperatures have risen about 1.2C above the pre-industrial benchmark, the report noted.

The six years since 2015 are the warmest on record, as are 20 of the last 21, clear evidence of a feverish planet.