How is the weather in madrid december?
 In December it doesn't really get much colder as we head deeper into December and Madrid tends to stay dry. December 15 Averages High: 9°C. Low: 0°C.  The sea has a warming effect in winter, so Barcelona isn't as cold in December as in Madrid, but it can still get pretty chilly. he earliest sunrise of the month in Madrid is 8:18 AM on December 1 and the latest sunrise is 19 minutes later at 8:37 AM on December 31. The earliest sunset is 5:48 PM on December 8 and the latest sunset is 10 minutes later at 5:57 PM on December 31. 