Weather in Boston in March 2025
Average weather
Average temperature in Boston in March
The temperature in March is +9°C on average, with a range between a maximum of +16°C during the day and a minimum of -2°C at night.
The average maximum temperature goes up 22% by the end of the month, compared with the beginning of the month, from +6°C to +10°C.
Is Boston warm or cold in March?
Boston is typically cool in March.
Maximum temperatures go up compared to the previous month from +4°C to +8°C. The minimum temperature also goes up from -4°C to 0°C.
Pack a sweater and a jacket as there will be cooler temperatures.
Take a look at how March is compared to other months in Boston:
Water temperature in Boston in March
Water in Boston in March is Cold. It varies from +2°C to +5°C, with an average of +3°C. This is almost similar to the air temperature, which averages +8°C.
The water temperature in March is one of the coldest of the entire year:
Can you swim in Boston in March?
Climate in Boston in March
| February | March | April | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +4°C | +8°C | +13°C | ||||
| Min. temperature | ||||||
| -23°C | -15°C | -8°C | ||||
| Max. temperature | ||||||
| +22°C | +29°C | +31°C | ||||
| Rainfall | ||||||
| 54 mm | 87 mm | 104 mm | ||||
| Wind | ||||||
| 4 m/s | 4 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +4°C | +3°C | +6°C | ||||
| Humidity | ||||||
| 62% | 62% | 63% | ||||
| Air pressure | ||||||
| 1016 HPa | 1015 HPa | 1014 HPa | ||||
| Sunny days | ||||||
| 5 | 5 | 4 | ||||
| Cloudy days | ||||||
| 10 | 10 | 10 | ||||
| Rainy days | ||||||
| 5 | 10 | 15 | ||||
| Snowy days | ||||||
| 8 | 5 | 1 | ||||
March weather is still as ok as in February. It’s getting warmer as March arrives. The average maximum temperature goes up from +4°C to +8°C during the day. Prepare for more rain. Average rainfall goes from 54 mm to 87 mm. Humidity levels don’t change as the month goes on, averaging around 62%. The average wind speed doesn’t change much during March, staying around 4 m/s. The amount of sunny days stay about the same, averaging 5 sunny days during the month.
April brings much the same weather, it remains ok.
Wind
The average wind speed is 5 m/s getting up to 9 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Boston is gradually increasing during March, going from 2 m/s to 3 m/s over the course of the month.
Rain
Snow
Here’s how March is compared with other months in the amount of snow, total mm:
How was the weather last March in Boston?
Climate Change over Years
The climate in Boston in March has not changed much over the last 43 years.
The average temperature was the lowest in 1992 (+14°C) and the highest in 2022 (+17°C). The driest year was 2016 with only 702 mm of rainfall, and the wettest year was 2021 with 2022 mm.
FAQ
Is March a good time to visit Boston?
Can you sunbathe in Boston in March?
Can you swim in Boston in March?
Is Boston rainy in March?
Is it sunny in Boston in March?
Other cities in USA
Monthly weather in Boston
Source of the data
For this page, we’ve looked at the typical weather in Boston, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.