World sea water temperatures

Water temperature in Bethany Beach (DE) in December

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Is it warm enough to swim in Bethany Beach in December? Average water temperature in Bethany Beach in December is 48.9°F and therefore is not suitable for comfortable swimming. The warmest sea in Bethany Beach in December is 56.5°F, and the coldest is 40.1°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 December 2024, 2023

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 December.

You can choose any other years:

Year 1:   Year 2:


Day 2024 2023 Min Max
December 153.1°F51.8°F49.6°F56.5°F
December 252.9°F51.6°F49.3°F56.1°F
December 352.5°F52°F49.3°F55.9°F
December 451.8°F52°F48.2°F54.3°F
December 549.6°F52°F48.2°F56.3°F
December 649.5°F50.7°F48.7°F54.3°F
December 748.9°F50.5°F47.8°F54.1°F
December 848.4°F49.6°F46.6°F53.2°F
December 947.3°F50.4°F47.1°F53.2°F
December 1047.7°F50.5°F47.7°F53.6°F
December 1147.8°F50.5°F47.3°F52.9°F
December 1248.2°F50.4°F46.4°F52.3°F
December 1347.7°F50°F46°F52.3°F
December 1447.1°F49.6°F45.9°F52.3°F
December 1546.6°F49.8°F46°F54.7°F
Day 2024 2023 Min Max
December 1646.6°F49.3°F45.9°F53.8°F
December 1747.1°F48.9°F45.9°F53.6°F
December 1847.7°F49.8°F45.1°F53.1°F
December 1947.8°F49.5°F45.1°F52.5°F
December 2047.3°F48.4°F44.8°F52.5°F
December 2146.6°F48°F43.3°F52°F
December 2245.5°F46.6°F43.5°F52°F
December 2344.8°F47.3°F43°F52.5°F
December 2444.1°F47.1°F40.1°F53.2°F
December 2544.4°F47.1°F40.8°F52.5°F
December 2643.7°F47.5°F41.2°F50.5°F
December 2743.9°F47.7°F41.7°F50.5°F
December 2844.1°F48°F41°F50.9°F
December 2944.4°F47.8°F41.4°F53.1°F
December 3045.3°F47.5°F41.7°F52.2°F
December 3145.3°F47.1°F42.3°F52.2°F
Bethany Beach water temp chart in December

Average water temperature in Bethany Beach in December over a decade

20152016201720182019
52.9°F48.7°F49.6°F46.9°F47.1°F
20202021202220232024
50.7°F49.8°F48.6°F49.3°F47.3°F

Bethany Beach sea state in December

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

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 December?

Want to know where the water temperature in December 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 December. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Indian River Inlet48.4°F39.7°F56.1°F
Fenwick Island49.1°F40.3°F57°F
Rehoboth Bay48°F39.4°F56.1°F
Towers Beach48.2°F39.4°F55.9°F
Cape Henlopen47.5°F38.7°F55.6°F
Broadkill Beach46.6°F37.8°F55°F
Slaughter Beach45.9°F37°F54.1°F
Cape May Point46.9°F38.3°F55.9°F
Cape May47.8°F39°F56.5°F
Diamond Beach48.2°F39°F56.7°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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