2015 was not an absolute record meteorological year in Belgium. But it will go down as the fourth warmest year since records began in 1833. This is mainly due to a historically warm December.
With an average temperature of 9.6°C, December 2015 is a record month, according to figures provided by the Royal Meteorological Institute (IRM). The average temperature in Belgium last year was 11.3°C, a little more than the average (10.5) and less than 2014’s record (11.9).
“The fact that 2015 is in the top 5 warmest years is exclusively due to November and December”, says meteorologist David Dehenauw. “Between January and the end of October, the average temperatures were normal. But the historically warm November and December made the average temperature rise significantly”.