World sea water temperatures

Water temperature in Portsmouth (NC) in March

Is it warm enough to swim in Portsmouth in March? Average water temperature in Portsmouth in March is 62.2°F and therefore is not suitable for comfortable swimming. The warmest sea in Portsmouth in March is 68.9°F, and the coldest is 51.3°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Portsmouth

Changes water temperature in Portsmouth in March 2025, 2024

To get an accurate forecast for the water temperature in Portsmouth for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Portsmouth, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of March.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
March 164.8°F52.2°F52.2°F66.2°F
March 263.3°F53.2°F53.2°F66°F
March 364.2°F55°F55°F65.1°F
March 462.8°F55.4°F55.4°F66.6°F
March 564.4°F59.5°F57.2°F66°F
March 663.9°F59.5°F57°F66.2°F
March 762.4°F59.9°F56.3°F67.3°F
March 859.7°F60.1°F56.5°F66.4°F
March 959.7°F59.7°F56.8°F67.8°F
March 1060.1°F59.5°F57.7°F67.3°F
March 1163°F60.3°F58.6°F66.9°F
March 1262.8°F60.6°F57°F68°F
March 1362.6°F61.5°F57.4°F66°F
March 1461°F62.6°F56.1°F66.2°F
March 1563°F63.1°F55.9°F66.2°F
Day 2025 2024 Min Max
March 1661.3°F63.7°F56.5°F66.2°F
March 1761.7°F63.9°F57.6°F66.4°F
March 1863.3°F64.2°F58.1°F66.7°F
March 1966.6°F63.5°F57.9°F67.1°F
March 2067.6°F63.3°F57.9°F67.6°F
March 2164.4°F63°F55.6°F66.9°F
March 2264°F62.1°F56.7°F68.4°F
March 2364.8°F61.5°F57.2°F68.9°F
March 2464.4°F61.9°F57.6°F68.7°F
March 2565.7°F61.2°F57.2°F68°F
March 2664.6°F57.7°F55.8°F67.8°F
March 2764.9°F57.9°F55.8°F66.7°F
March 2864.4°F58.5°F55.6°F66.9°F
March 2963.5°F51.3°F51.3°F67.6°F
March 3064.9°F52.7°F52.7°F68.2°F
March 3163.9°F55.4°F55.4°F68.7°F
Portsmouth water temp chart in March

Average water temperature in Portsmouth in March over a decade

20162017201820192020
64°F63.3°F59.9°F62.1°F63.3°F
20212022202320242025
60.4°F64.6°F63.1°F59.5°F63.5°F

Portsmouth sea state in March

Chart comparing the height of waves in Portsmouth in March over the past years. The red line indicates the height of the waves when swimming in the sea is prohibited. To view the current sea conditions, click on the graph.

Waves height in Portsmouth in March

Portsmouth water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Where is the warm sea water in March?

Want to know where the water temperature in March is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

The nearest locations with the average water temperature in March. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Davis61.7°F53.2°F69.1°F
Buxton61.2°F51.1°F68.2°F
Engelhard55.4°F46.4°F64.6°F
Cape Hatteras63.1°F52°F70.5°F
Oriental57.2°F47.7°F65.5°F
Outer Banks61.5°F49.5°F69.4°F
Harkers Island60.4°F52.3°F68.7°F
Cape Lookout61.9°F51.8°F69.3°F
Beaufort59.5°F51.4°F68.2°F
Minnesott Beach57.7°F48°F66.7°F

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Portsmouth is compiled using satellite data together with in-situ observations to get the most reliable daily data of sea surface temperatures, surf forecasts, current temperatures and weather forecasts.

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