World sea water temperatures

Water temperature in Cedar Beach in March

Is it warm enough to swim in Cedar Beach in March? Average water temperature in Cedar Beach in March is 40.8°F and therefore is not suitable for comfortable swimming. The warmest sea in Cedar Beach in March is 50.4°F, and the coldest is 32.9°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Cedar Beach

Changes water temperature in Cedar Beach in March 2026, 2025

To get an accurate forecast for the water temperature in Cedar Beach for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Cedar Beach, 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 2026 2025 Min Max
March 134.5°F37.9°F34°F43°F
March 234.7°F37.4°F33.4°F43°F
March 334.9°F37.2°F33.6°F43.7°F
March 435.6°F38.1°F32.9°F44.2°F
March 536°F37.9°F32.9°F43.3°F
March 636°F39°F33.3°F43°F
March 737°F40.1°F33.3°F43.3°F
March 836.7°F40.6°F33.6°F43.9°F
March 937°F40.1°F34°F45°F
March 10 40.6°F34.2°F43.7°F
March 11 40.8°F34.9°F44.1°F
March 12 41.5°F34.7°F44.2°F
March 13 41.2°F34.7°F45.3°F
March 14 41.2°F35.1°F45.9°F
March 15 43.2°F35.1°F45.3°F
Day 2026 2025 Min Max
March 16 40.8°F35.4°F45.1°F
March 17 41.2°F35.6°F46°F
March 18 42.1°F35.8°F46.9°F
March 19 41.9°F36°F46.8°F
March 20 41.4°F35.8°F46.9°F
March 21 42.8°F35.8°F47.3°F
March 22 43.2°F35.8°F48.6°F
March 23 43.5°F36°F50.4°F
March 24 43.2°F36.1°F48.9°F
March 25 44.1°F36.7°F48.4°F
March 26 43°F37.4°F47.8°F
March 27 43.2°F37.4°F47.7°F
March 28 43.7°F37.2°F47.1°F
March 29 45.1°F37.4°F47.3°F
March 30 44.6°F37.6°F47.5°F
March 31 45.3°F37.8°F46.9°F
Cedar Beach water temp chart in March

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Average water temperature in Cedar Beach in March over a decade

20162017201820192020
42.8°F40.8°F40.5°F39.7°F43.7°F
20212022202320242025
40.6°F41.4°F42.8°F43.5°F41.5°F

Cedar Beach sea state in March

Chart comparing the height of waves in Cedar Beach 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 Cedar Beach in March

Cedar Beach 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
New York City41.2°F35.1°F50.5°F
Oak Beach40.8°F32.7°F50.4°F
Amityville41°F32.9°F50.4°F
Saltaire40.6°F32.7°F50.4°F
Islip40.8°F32.4°F50.2°F
Great River40.8°F32.4°F50.2°F
Fire Island40.8°F32.9°F50.4°F
West Sayville40.8°F32.5°F50.4°F
Baldwin Harbor41.4°F36.1°F50.7°F
Point Lookout41.4°F36.1°F50.7°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 Cedar Beach 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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