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Water temperature in Bethany Beach (DE) in March

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Is it warm enough to swim in Bethany Beach in March? Average water temperature in Bethany Beach in March is 43.3°F and therefore is not suitable for comfortable swimming. The warmest sea in Bethany Beach in March is 53.1°F, and the coldest is 33.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Bethany Beach

Changes water temperature in Bethany Beach in March 2025, 2024

To get an accurate forecast for the water temperature in Bethany 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 Bethany 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 2025 2024 Min Max
March 140.8°F43.2°F33.6°F45.5°F
March 240.3°F43.7°F33.1°F45.9°F
March 340.3°F45°F33.6°F45.9°F
March 440.5°F45.1°F34.2°F46.2°F
March 542.3°F45.7°F34.2°F46.6°F
March 641.7°F45.9°F33.6°F46.4°F
March 741.7°F46°F33.8°F46.4°F
March 841.9°F45.7°F34.3°F45.9°F
March 942.4°F45.7°F35.1°F47.7°F
March 1042.4°F46°F35.6°F47.5°F
March 1143°F45.1°F36.5°F47.1°F
March 1243.3°F45.5°F35.8°F47.1°F
March 1343.7°F47.1°F36.1°F48.6°F
March 1444.4°F47.7°F36.9°F49.1°F
March 1544.8°F47.3°F36.5°F48.2°F
Day 2025 2024 Min Max
March 1643.9°F48.6°F36.9°F48.9°F
March 1744.6°F48.6°F37.8°F48.9°F
March 1844.2°F47.8°F37.9°F50.4°F
March 1944.6°F47.8°F38.1°F50.9°F
March 2045°F47.8°F38.1°F50.5°F
March 2144.6°F46.8°F38.7°F51.4°F
March 2245.3°F46.8°F39°F52.9°F
March 2345.5°F47.3°F39°F53.1°F
March 2445.9°F46.9°F39°F52.9°F
March 2547.3°F46.6°F39.6°F52.5°F
March 2646.9°F46.6°F38.1°F50.5°F
March 2746.9°F46.8°F38.7°F50.2°F
March 2847.5°F46.8°F39.2°F50°F
March 2948°F46.8°F39.6°F50.7°F
March 3047.8°F47.1°F40.3°F50.4°F
March 3147.7°F47.7°F40.3°F50°F
Bethany Beach water temp chart in March

Average water temperature in Bethany Beach in March over a decade

20162017201820192020
45.1°F43.9°F41.4°F42.1°F46.8°F
20212022202320242025
43°F45.1°F45.7°F46.4°F44.2°F

Bethany Beach sea state in March

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

Bethany 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
Indian River Inlet43.2°F32.9°F53.1°F
Fenwick Island43.3°F33.8°F53.2°F
Rehoboth Bay43.2°F32.7°F52.9°F
Towers Beach43°F32.7°F52.9°F
Cape Henlopen43°F32.4°F52.9°F
Broadkill Beach43.2°F32°F52.9°F
Slaughter Beach43.2°F31.6°F53.1°F
Cape May Point42.8°F32.4°F52.5°F
Cape May42.6°F32.9°F52.3°F
Diamond Beach42.6°F33.3°F52.3°F

Bethany Beach photo gallery

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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 Bethany 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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