March weather forecast
Portsmouth, VA

Gold and brown trees and modern developed buildings in Downtown Portsmouth, Virginia
Gold and brown trees and modern developed buildings in Downtown Portsmouth, Virginia

Weather in March

The first month of the spring, March, is a fresh month in Portsmouth, Virginia, with an average temperature varying between 54.5°F (12.5°C) and 42.4°F (5.8°C).

Temperature

In Portsmouth, the average high-temperature in March slightly increases from a frosty 49.1°F (9.5°C) in February to a fresh 54.5°F (12.5°C). In March, in Portsmouth, the average low-temperature is 42.4°F (5.8°C).

Humidity

The average relative humidity in March in Portsmouth is 75%.

Rainfall

In Portsmouth, during 13.9 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. Throughout the year, in Portsmouth, there are 151.9 rainfall days, and 20.35" (517mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall in Portsmouth. March is the last month it regularly snows. During 0.4 snowfall days, in March, Portsmouth aggregates 0.04" (1mm) of snow. In Portsmouth, during the entire year, snow falls for 5.3 days and aggregates up to 1.18" (30mm) of snow.

Ocean temperature

In Portsmouth, Virginia, in March, the average water temperature is 47.1°F (8.4°C).
Note: Swimming in 47.1°F (8.4°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

The average length of the day in March in Portsmouth is 11h and 59min.
On the first day of March, sunrise is at 6:35 am and sunset at 5:59 pm EST. On the last day of the month, sunrise is at 6:52 am and sunset at 7:26 pm EDT.
Note: On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time lasts until Sunday, November 5. 2023, at 2:00 am; consequently, the time zone reverts from EDT to EST.

Sunshine

In March, the average sunshine in Portsmouth is 6.9h.

UV index

The average daily maximum UV index in March in Portsmouth is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 3 in March transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. 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. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in March in Portsmouth?

The average high-temperature, in March, in Portsmouth, Virginia, is 54.5°F (12.5°C), while the average low-temperature is 42.4°F (5.8°C).

What is the average humidity in March in Portsmouth?

The average relative humidity in March is 75%.

How many days does it rain in March in Portsmouth?

In Portsmouth, Virginia, during March, the rain falls for 13.9 days and regularly aggregates up to 1.34" (34mm) of precipitation.

What is the last month it snows in Portsmouth?

March is the last month it regularly snows in Portsmouth, Virginia. During 0.4 snowfall days, in March, Portsmouth aggregates 0.04" (1mm) of snow.

How cold is the water in March in Portsmouth?

In March, the average ocean temperature in Portsmouth, Virginia, is 47.1°F (8.4°C). At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

How many hours of daylight does Portsmouth have in March?

In March, the average day length is 11h and 59min.

When is the sunrise / sunset in March in Portsmouth?

On the first day of March in Portsmouth, Virginia, sunrise is at 6:35 am and sunset at 5:59 pm EST. On the last day of the month, sunrise is at 6:52 am and sunset at 7:26 pm EDT.

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

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. DST ends Sunday, November 5. 2023, at 2:00 am.

How many hours of sunshine does Portsmouth have in March?

In Portsmouth, Virginia, the average sunshine duration in March is 6.9h.

What is the UV index reading in March in Portsmouth?

In Portsmouth, the average daily maximum UV index in March is 3. A UV Index of 3 to 5 symbolizes a medium health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in March
Portsmouth, VA

Average temperature in March - Portsmouth, VA
  • Average high temperature in March: 54.5°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (45.9°F).

  • Average low temperature in March: 42.4°F

The month with the highest average low temperature is July (73.6°F).
The coldest month (with the lowest average low temperature) is January (34.7°F).

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Average pressure in March
Portsmouth, VA

Average pressure in March - Portsmouth, VA
  • Average pressure in March: 30.08"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in March
Portsmouth, VA

Average wind speed in March - Portsmouth, VA
  • Average wind speed in March: 10.5mph

The windiest months (with the highest average wind speed) are March and April (10.5mph).
The calmest month (with the lowest average wind speed) is August (7.5mph).

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Average humidity in March
Portsmouth, VA

Average humidity in March - Portsmouth, VA
  • Average humidity in March: 75%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are July and November (74%).

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Average rainfall in March
Portsmouth, VA

Average rainfall in March - Portsmouth, VA
  • Average rainfall in March: 1.34"

The wettest month (with the highest rainfall) is August (2.52").
The driest month (with the least rainfall) is November (1.1").

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Average rainfall days in March
Portsmouth, VA

Average rainfall days in March - Portsmouth, VA
  • Average rainfall days in March: 13.9 days

The month with the highest number of rainy days is July (17.4 days).
The month with the least rainy days is November (8.3 days).

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Average snowfall in March
Portsmouth, VA

Average snowfall in March - Portsmouth, VA
  • Average snowfall in March: 0.04"

The month with the highest snowfall is January (0.47").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in March
Portsmouth, VA

Average snowfall days in March - Portsmouth, VA
  • Average snowfall days in March: 0.4 days

The month with the highest number of snowfall days is January (2.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average sea temperature in March
Portsmouth, VA

Average sea temperature in March - Portsmouth, VA
  • Average sea temperature in March: 47.2°F

The best month for swimming (with the highest average sea temperature) is August (80°F).
The coldest month (with the lowest average sea temperature) is February (44.5°F).

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Average daylight in March /
Average sunshine in March
Portsmouth, VA

Average daylight in March / Average sunshine in March - Portsmouth, VA
  • Average daylight in March: 11h and 59min

The month with the longest days is June (Average daylight: 14h and 39min).
The month with the shortest days is December (Average daylight: 9h and 41min).

  • Average sunshine in March: 6h and 54min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).

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Average sunshine days in March
Portsmouth, VA

Average sunshine days in March - Portsmouth, VA
  • Average sunshine days in March: 15.3 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is August (10.8 days).

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Average UV index in March
Portsmouth, VA

Average UV index in March - Portsmouth, VA
  • Average UV index in March: 3

The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is January (UV index 2).

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Average cloud cover in March
Portsmouth, VA

Average cloud cover in March - Portsmouth, VA
  • Average cloud cover in March: 44

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 26).

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Average visibility in March
Portsmouth, VA

Average visibility in March - Portsmouth, VA
  • 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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