Avg weather in December
9 Hrs per day
0 mm per month
81 % avg
11 Mph avg


What’s the weather like in Boston in December?

Boston weather in December is very cold but the city comes alive for the festive season with beautiful Christmas lights and decorations all over the city. There’s plenty to do during your city break to Boston, including seeing the New England Aquarium, the Freedom Trail and the Museum of Fine Arts.

Geographical influences

Boston is located in Massachusetts and is one of the oldest cities in the country. The streets are lined with tall skyscrapers and historical colonial buildings that balance the old with the new. It’s very cold in the winter and it often snows in December. You’ll need to pack your winter clothes for the trip with hats, scarves and gloves to help keep you warm when you’re out exploring the city.


The average temperature in December is around 4°C during the day with temperatures dropping below freezing at night with lows of -3°C. It’s likely to snow in the winter, which is great if you love the traditional Christmas atmosphere in December. However, if you’re not a fan of the cold it’s better to wait until late spring or the summer for a warmer climate. Winds reach speeds of up to 11mph with humidity levels of 81%. There are nine hours of sunlight per day, which is plenty of time to sightsee and explore the city.

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