March weather forecast
Hyannis, MA

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Weather in March

As Winter gives way to Spring, Hyannis witnesses significant changes in its meteorological conditions in March. The city experiences a perceptible increase in temperatures on land as spring draws near. Interestingly, the sea temperature decreases slightly to 39°F (3.9°C), defying the pattern of rising temperatures elsewhere. A notable growth in daylight hours brings more sunshine, increasing the UV index. Despite these improvements, the relative humidity remains fairly consistent from Winter to Spring.

Temperature

The introduction of March notes a subtle temperature variation to a still icy 41.5°F (5.3°C) from February's 38.8°F (3.8°C). Maintaining close parity with daytime warmth, the average nocturnal temperature in Hyannis during March stays at a still wintry 35.2°F (1.8°C).

Humidity

In Hyannis, the average relative humidity in March is 75%.

Rainfall

In Hyannis, during March, the rain falls for 12.9 days and regularly aggregates up to 3.19" (81mm) of precipitation. In Hyannis, Massachusetts, during the entire year, the rain falls for 157.2 days and collects up to 31.77" (807mm) of precipitation.

Snowfall

January through April and December are months with snowfall in Hyannis. The month with the most snowfall in Hyannis is March, when snow falls for 5.2 days and typically aggregates up to 1.93" (49mm) of snow.

Ocean temperature

March is the month with the coldest seawater in Hyannis, Massachusetts, with an average ocean temperature of 39°F (3.9°C).
Note: During swimming, this state is an instant threat to life. Breathing is uncontrollable, and coherent thought processes nearly vanish. A specialized swimsuit is crucial to minimize thermal dissipation.

Daylight

In Hyannis, Massachusetts, 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 5:32 pm EST. On the last day of March, sunrise is at 6:24 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 Hyannis, the average sunshine in March is 5.9h.

UV index

January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Hyannis, Massachusetts. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: In March, a daily UV index of 2 turns into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
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Frequently asked questions

How cold is March in Hyannis?

The high-temperature, in March, in Hyannis, records 41.5°F (5.3°C), while the low-temperature is 35.2°F (1.8°C).

What is the average humidity in March in Hyannis?

In March, the average relative humidity in Hyannis is 75%.

How much does it rain in Hyannis in March?

In March, the rain falls for 12.9 days. Throughout March, 3.19" (81mm) of precipitation is accumulated.

What is the snowiest month in Hyannis?

The month with the most snowfall in Hyannis is March, when snow falls for 5.2 days and typically aggregates up to 1.93" (49mm) of snow.

How many days does it snow in March in Hyannis?

In Hyannis, in March, snow falls for 5.2 days, with typically accumulated 1.93" (49mm) of snow.

What is the month with the coldest ocean in Hyannis?

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

What is the ocean temperature in March in Hyannis?

In Hyannis, Massachusetts, in March, the average water temperature is 39°F (3.9°C). For swimming, this is considered extremely cold, dangerous, and life-threatening. Unless suitably protected with insulated waterproof clothing, hypothermia quickly occurs.

How many hours of daylight does Hyannis have in March?

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

What time are sunrise and sunset in March in Hyannis?

On the first day of March in Hyannis, sunrise is at 6:14 am and sunset at 5:32 pm EST. On the last day of the month, sunrise is at 6:24 am and sunset at 7:05 pm EDT.

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

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

How many hours of sunshine does Hyannis have in March?

In March, the average sunshine duration in Hyannis, Massachusetts, is 5.9h.

What are the months with the lowest UV index in Hyannis?

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

What is the UV index reading in March in Hyannis?

In Hyannis, the average daily maximum UV index in March is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
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
Hyannis, MA

Average temperature in March - Hyannis, MA
  • Average high temperature in March: 41.5°F

The warmest month (with the highest average high temperature) is August (72.5°F).
The month with the lowest average high temperature is January (38.3°F).

  • Average low temperature in March: 35.2°F

The month with the highest average low temperature is August (68.2°F).
The coldest month (with the lowest average low temperature) is January (30.4°F).

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Average pressure in March
Hyannis, MA

Average pressure in March - Hyannis, 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).

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Average wind speed in March
Hyannis, MA

Average wind speed in March - Hyannis, MA
  • Average wind speed in March: 16.2mph

The windiest month (with the highest average wind speed) is January (16.5mph).
The calmest month (with the lowest average wind speed) is August (10.6mph).

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Average humidity in March
Hyannis, MA

Average humidity in March - Hyannis, MA
  • Average humidity in March: 75%

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

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Average rainfall in March
Hyannis, MA

Average rainfall in March - Hyannis, MA
  • Average rainfall in March: 3.19"

The wettest month (with the highest rainfall) is October (3.7").
The driest month (with the least rainfall) is August (1.73").

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Average rainfall days in March
Hyannis, MA

Average rainfall days in March - Hyannis, MA
  • Average rainfall days in March: 12.9 days

The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is February (10.3 days).

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Average snowfall in March
Hyannis, MA

Average snowfall in March - Hyannis, MA
  • Average snowfall in March: 1.93"

The month with the highest snowfall is March (1.93").
The months with the least snowfall are May, June, July, August, September, October and November (0").

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Average snowfall days in March
Hyannis, MA

Average snowfall days in March - Hyannis, MA
  • Average snowfall days in March: 5.2 days

The month with the highest number of snowfall days is February (7.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in March
Hyannis, MA

Average sea temperature in March - Hyannis, 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).

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

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

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in March: 5h and 5min

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

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Average sunshine days in March
Hyannis, MA

Average sunshine days in March - Hyannis, MA
  • Average sunshine days in March: 12.5 days

The month with the most sunshine days is August (17.7 days).
The month with the least sunshine days is February (11.4 days).

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Average UV index in March
Hyannis, MA

Average UV index in March - Hyannis, 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).

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Average cloud cover in March
Hyannis, MA

Average cloud cover in March - Hyannis, MA
  • Average cloud cover in March: 49

The months with the most cloud cover are February and December (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).

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Average visibility in March
Hyannis, MA

Average visibility in March - Hyannis, 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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Hyannis, Massachusetts, USA

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