Weather in Brussels in December
How warm is it in Brussels in December?
In December the typical daytime high in Brussels is 6.8 °C on average, from 7.2 °C at the start to 6.2 °C at the end of the month.
That is 3.0 °C cooler than in November and 0.9 °C warmer than in January.
The last 10 years were 2.1 °C warmer than more than 40 years ago.
Click a day for more: afternoon and night, the usual range, records and how fast it is warming.
Measured at the weather station Uccle, 6 km away.