December · United States
Best time to visit Boston in December Weather, crowds & prices
Weather in Boston in December
Average temperature 1°C, 156 mm of rain, about 0 days with 6+ hours of sunshine and 85% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
2.5/10
Ranked #11 of 12 months
- Avg temp
- 1°C
- Rainfall
- 156 mm
- Humidity
- 85%
- Days with 6h+ sun
- 0
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $ · Budget Friendly ($)
December in Boston scores 2.5/10 for sightseeing and cultural travel - ranked #11 of 12. Expect around 1°C, 156 mm of rain, and roughly 0 days with 6+ hours of sunshine this month.
Freedom Trail bricks, harbor ferries, and campus greens feel finest May through September.
December in Boston: expect compromises
At 1°C (34°F) this is proper winter weather in December: layer up and split the day between outdoor highlights and indoor stops.
156 mm of rain signals a properly wet month, with only almost no days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 2.5/10 on the same scale — 11th of 12 months, versus 8.2/10 for the best month here.
Pack insulated layers, a windproof shell, gloves and boots with grip, a proper rain shell rather than an umbrella.
Budget for low-season pricing, and crowds are light for this destination.
If your dates are flexible, May is materially better in Boston — 5.7 points higher on the same scale.
Frequently asked
- What is the weather like in Boston in December?
- In December, Boston averages 1°C, 156 mm of rain, and about 0 days with 6+ hours of sunshine. Its climate-comfort score is 2.5/10.
- Is December a good time to visit Boston?
- December earns a 2.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Boston in December?
- Expect about 156 mm of rain in December. Average humidity is 85% and there are about 0 days with 6+ hours of sunshine.
Curated in Boston
Tickets & experiences
Things to do in Boston
Boston, United States. Live activities and tours from GetYourGuide, matched to this destination.