Here are the charts for December. Not much to add really to what has already been said in this thread. The numbers are truly astonishing. The record has been beaten by 1.6C. Warmest December for at least more than 350 years.
In the CET area the mean minimum and maximum temperature anomalies were very similar. However, the mean maximum was 1.8C above the previous record whereas the minimum was only 0.9C above the previous record.
Every single day in December was above average when looking at the maximum, minimum and mean temperature figures. 5 CET date records including 4 in a row.