Average temperatures, rainfall and packing tips for Brussels, Belgium in December
December in Brussels is typically cool, with average daytime highs around 8°C and nights near 3°C. It is one of the cooler months of Brussels's year.
Expect some rain: around 64 mm falls in Brussels during December on average.
If your dates are flexible, the most comfortable months in Brussels are usually May, June, July, August and September.
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In December, Brussels averages a daytime high of about 8°C and a night-time low of around 3°C, based on recent historical data.
Expect some rain: around 64 mm falls in Brussels during December on average.
December is a workable time to visit Brussels, with cool days - just pack accordingly. If your dates are flexible, the most comfortable months in Brussels are usually May, June, July, August and September.