March weather forecast
Boston, MA

A beautiful natural park with the George Washington Monument in Boston, Massachusetts
A beautiful natural park with the George Washington Monument in Boston, Massachusetts

Weather in March

The first month of the spring, March, is a frosty month in Boston, Massachusetts, with an average temperature ranging between max 43.5°F (6.4°C) and min 30.9°F (-0.6°C).

Temperature

In March, the average high-temperature marginally rises from a wintry 36.5°F (2.5°C) in February to a chilly 43.5°F (6.4°C). The average low-temperature, in March, is 30.9°F (-0.6°C).

Humidity

In March, the average relative humidity is 73%.

Rainfall

The months with the most rainfall in Boston are March, April and December, with an average 2.91" (74mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Boston. In Boston, during 6.8 snowfall days, 3.86" (98mm) of snow is typically accumulated. In Boston, during the entire year, snow falls for 29.8 days and aggregates up to 15.75" (400mm) of snow.

Ocean temperature

In Boston, the average seawater temperature in March is 38.3°F (3.5°C).
Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

Daylight

In March, the average length of the day is 11h and 58min.
On the first day of March in Boston, Massachusetts, sunrise is at 6:19 am and sunset at 5:33 pm EST. On the last day of the month, sunrise is at 6:27 am and sunset at 7:08 pm EDT.
Note: On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 6. 2022, at 2:00 am; consequently, the time zone reverts from EDT to EST.

Sunshine

The average sunshine in March is 5.6h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Boston. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for average individuals.
Note: In March, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in March in Boston?

In March, the average relative humidity in Boston, Massachusetts, is 73%.

What is the wettest month in Boston?

The wettest months in Boston are March, April and December, with an average 2.91" (74mm) of rainfall.

How much does it rain in Boston in March?

In Boston, Massachusetts, in March, during 11.6 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.

How much does it snow in Boston in March?

In Boston, Massachusetts, in March, snow falls for 6.8 days, with typically accumulated 3.86" (98mm) of snow.

What is the water temperature in March in Boston?

In Boston, in March, the average water temperature is 38.3°F (3.5°C). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.

What is the average length of the day in March in Boston?

In March, the average day length in Boston, Massachusetts, is 11h and 58min.

When is the sunrise / sunset in March in Boston?

On the first day of March in Boston, sunrise is at 6:19 am and sunset at 5:33 pm EST. On the last day of the month, sunrise is at 6:27 am and sunset at 7:08 pm EDT.

When does Daylight Saving Time (DST) start in March in Boston?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Boston, Massachusetts, and the time zone changes from EST to EDT. DST ends Sunday, November 6. 2022, at 2:00 am.

How long on average sun shines in March in Boston?

In March, the average sunshine duration in Boston, Massachusetts, is 5.6h.

What is the month with the lowest UV index in Boston?

The months with the lowest UV index in Boston are January through March, November and December, with an average maximum UV index of 2.

How high is the UV index in March in Boston?

The average daily maximum UV index in March in Boston, Massachusetts, is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to UV radiation.

Average temperature in March
Boston, MA

Average temperature in March - Boston, MA
  • Average high temperature in March: 43.5°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (34.2°F).

  • Average low temperature in March: 30.9°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

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Average pressure in March
Boston, MA

Average pressure in March - Boston, MA
  • Average pressure in March: 30.03"

The month with the highest atmospheric pressure is November (30.06").
The month with the lowest atmospheric pressure is June (29.93").

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Average wind speed in March
Boston, MA

Average wind speed in March - Boston, MA
  • Average wind speed in March: 9.4mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in March
Boston, MA

Average humidity in March - Boston, MA
  • Average humidity in March: 73%

The month with the highest relative humidity is February (77%).
The month with the lowest relative humidity is April (69%).

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Average rainfall in March
Boston, MA

Average rainfall in March - Boston, MA
  • Average rainfall in March: 2.91"

The wettest months (with the highest rainfall) are March, April and December (2.91").
The driest month (with the least rainfall) is September (1.26").

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Average rainfall days in March
Boston, MA

Average rainfall days in March - Boston, MA
  • Average rainfall days in March: 11.6 days

The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in March
Boston, MA

Average snowfall in March - Boston, MA
  • Average snowfall in March: 3.86"

The month with the highest snowfall is February (4.72").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in March
Boston, MA

Average snowfall days in March - Boston, MA
  • Average snowfall days in March: 6.8 days

The months with the highest number of snowfall days are January and February (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in March
Boston, MA

Average sea temperature in March - Boston, MA
  • Average sea temperature in March: 38.4°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (38.1°F).

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Average daylight in March /
Average sunshine in March
Boston, MA

Average daylight in March / Average sunshine in March - Boston, MA
  • Average daylight in March: 11h and 58min

The month with the longest days is June (Average daylight: 15h and 14min).
The month with the shortest days is December (Average daylight: 9h and 8min).

  • Average sunshine in March: 5.6h

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is February (Average sunshine: 4.6h).

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Average sunshine days in March
Boston, MA

Average sunshine days in March - Boston, MA
  • Average sunshine days in March: 14.8 days

The month with the most sunshine days is September (17.7 days).
The month with the least sunshine days is April (13 days).

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Average UV index in March
Boston, MA

Average UV index in March - Boston, MA
  • Average UV index in March: 2

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

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Average cloud cover in March
Boston, MA

Average cloud cover in March - Boston, MA
  • Average cloud cover in March: 51

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).

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Average visibility in March
Boston, MA

Average visibility in March - Boston, MA
  • Average visibility in March: 6mi

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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