March · United States
Best time to visit Boston in March Weather, crowds & prices
Weather in Boston in March
Average temperature 3°C, 146 mm of rain, about 11 days with 6+ hours of sunshine and 84% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
March score
4.0/10
Ranked #10 of 12 months
- Avg temp
- 3°C
- Rainfall
- 146 mm
- Humidity
- 84%
- Days with 6h+ sun
- 11
- Crowd Density
- Quiet / Uncrowded
- Average Expenses
- $$ · Moderate Cost ($$)
March in Boston scores 4.0/10 for sightseeing and cultural travel - ranked #10 of 12. Expect around 3°C, 146 mm of rain, and roughly 11 days with 6+ hours of sunshine this month.
Freedom Trail bricks, harbor ferries, and campus greens feel finest May through September.
March in Boston — the hardest end of the year
At 3°C (37°F) this is proper winter weather in March: layer up and split the day between outdoor highlights and indoor stops.
146 mm of rain signals a properly wet month, with only about 11 days with 6+ hours of sunshine to count on — build indoor options into the schedule.
That is 4/10 on the same scale — 10th 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 mid-season pricing, and crowds are light for this destination.
If your dates are flexible, May is materially better in Boston — 4.2 points higher on the same scale.
Frequently asked
- What is the weather like in Boston in March?
- In March, Boston averages 3°C, 146 mm of rain, and about 11 days with 6+ hours of sunshine. Its climate-comfort score is 4.0/10.
- Is March a good time to visit Boston?
- March earns a 4.0/10 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 March?
- Expect about 146 mm of rain in March. Average humidity is 84% and there are about 11 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.