March weather forecast
South Yarmouth, MA

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Weather in March

The first month of the spring, March, is also an icy month in South Yarmouth, Massachusetts, with an average temperature fluctuating between 35.6°F (2°C) and 41.4°F (5.2°C).

Temperature

With the onset of March, South Yarmouth's average high-temperature clocks in at a still cold 41.4°F (5.2°C), showing a minor fluctuation from the previous month. South Yarmouth sustains an average of approximately a still cold 35.6°F (2°C) during March nights, with little variation from daytime highs.

Humidity

In South Yarmouth, the average relative humidity in March is 76%.

Rainfall

In South Yarmouth, in March, during 9.9 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. In South Yarmouth, Massachusetts, during the entire year, the rain falls for 129 days and collects up to 14.21" (361mm) of precipitation.

Snowfall

Months with snowfall are January through April and December. In South Yarmouth, in March, during 3.8 snowfall days, 0.51" (13mm) of snow is typically accumulated. In South Yarmouth, during the entire year, snow falls for 20.8 days and aggregates up to 2.6" (66mm) of snow.

Ocean temperature

March is the month with the coldest seawater, with an average ocean temperature of 39°F (3.9°C).
Note: During swimming, this scenario is excessively cold, hazardous, and can lead to fatality. Hypothermia ensues swiftly without suitable insulated waterproof wear.

Daylight

The average length of the day in March is 11h and 58min.
On the first day of the month, sunrise is at 6:14 am and sunset at 5:31 pm EST. On the last day of March, sunrise is at 6:23 am and sunset at 7:05 pm EDT.
Note: On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 3. 2024, at 2:00 am; consequently, the time zone reverts from EDT to EST.

Sunshine

In March, the average sunshine is 6h.

UV index

The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: An average maximum UV index of 2 in March leads to these recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Updated: Aug 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in March?

The high-temperature in South Yarmouth during March is 41.4°F (5.2°C) and the low-temperature is 35.6°F (2°C).

What is the average humidity in March?

In March, the average relative humidity is 76%.

How much does it rain in March?

In March, the rain falls for 9.9 days. Throughout March, 1.06" (27mm) of precipitation is accumulated.

How much does it snow in March?

In South Yarmouth, during March, snow falls for 3.8 days and regularly aggregates up to 0.51" (13mm) of snow.

What month is the ocean coldest?

March is the month with the coldest seawater, with an average ocean temperature of 39°F (3.9°C).

What is the water temperature in March?

In South Yarmouth, the average seawater temperature in March is 39°F (3.9°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?

The average day length in March is 11h and 58min.

When is the sunrise / sunset in March?

On the first day of March, sunrise is at 6:14 am and sunset at 5:31 pm EST. On the last day of the month, sunrise is at 6:23 am and sunset at 7:05 pm EDT.

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

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in South Yarmouth, and the time zone changes from EST to EDT. DST ends Sunday, November 3. 2024, at 2:00 am.

How long on average sun shines in March?

The average sunshine duration in March is 6h.

When is the lowest UV index?

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

How high is the UV index in March?

The average daily maximum UV index in March is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
South Yarmouth, MA

Average temperature in March - South Yarmouth, MA
  • Average high temperature in March: 41.4°F

The warmest month (with the highest average high temperature) is August (72.1°F).
The month with the lowest average high temperature is January (38.5°F).

  • Average low temperature in March: 35.6°F

The month with the highest average low temperature is August (68.5°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

Average pressure in March
South Yarmouth, MA

Average pressure in March - South Yarmouth, MA
  • Average pressure in March: 30.02"Hg

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

Average wind speed in March
South Yarmouth, MA

Average wind speed in March - South Yarmouth, MA
  • Average wind speed in March: 16.5mph

The windiest month (with the highest average wind speed) is January (16.8mph).
The calmest months (with the lowest average wind speed) are July and August (10.9mph).

Average humidity in March
South Yarmouth, MA

Average humidity in March - South Yarmouth, MA
  • Average humidity in March: 76%

The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (74%).

Average rainfall in March
South Yarmouth, MA

Average rainfall in March - South Yarmouth, MA
  • Average rainfall in March: 1.06"

The wettest month (with the highest rainfall) is October (1.93").
The driest month (with the least rainfall) is August (0.94").

Average rainfall days in March
South Yarmouth, MA

Average rainfall days in March - South Yarmouth, MA
  • Average rainfall days in March: 9.9 days

The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is February (8.3 days).

Average snowfall in March
South Yarmouth, MA

Average snowfall in March - South Yarmouth, MA
  • Average snowfall in March: 0.51"

The month with the highest snowfall is January (0.87").
The months with the least snowfall are May, June, July, August, September, October and November (0").

Average snowfall days in March
South Yarmouth, MA

Average snowfall days in March - South Yarmouth, MA
  • Average snowfall days in March: 3.8 days

The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in March
South Yarmouth, MA

Average sea temperature in March - South Yarmouth, MA
  • Average sea temperature in March: 39°F

The best month for swimming (with the highest average sea temperature) is August (67.5°F).
The coldest month (with the lowest average sea temperature) is March (39°F).

Average daylight in March /
Average sunshine in March
South Yarmouth, MA

Average daylight in March / Average sunshine in March - South Yarmouth, MA
  • Average daylight in March: 12h and 0min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in March: 6h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 4h and 36min).

Average sunshine days in March
South Yarmouth, MA

Average sunshine days in March - South Yarmouth, MA
  • Average sunshine days in March: 16.4 days

The month with the most sunshine days is September (18.6 days).
The month with the least sunshine days is February (14.3 days).

Average UV index in March
South Yarmouth, MA

Average UV index in March - South Yarmouth, MA
  • Average UV index in March: 2

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

Average cloud cover in March
South Yarmouth, MA

Average cloud cover in March - South Yarmouth, MA
  • Average cloud cover in March: 49

The month with the most cloud cover is December (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 27).

Average visibility in March
South Yarmouth, MA

Average visibility in March - South Yarmouth, 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).

South Yarmouth, Massachusetts, USA

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