World sea water temperatures

Water temperature in Dover (DE) in December

Is it warm enough to swim in Dover in December? Average water temperature in Dover in December is 44.2°F and therefore is not suitable for comfortable swimming. The warmest sea in Dover in December is 52.3°F, and the coldest is 35.8°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Dover

Changes water temperature in Dover in December 2024, 2023

To get an accurate forecast for the water temperature in Dover for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Dover, 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 148.4°F46.2°F44.8°F52.3°F
December 247.8°F45.9°F44.6°F51.1°F
December 347.1°F45.7°F44.6°F51.6°F
December 446.9°F45°F44.4°F50.9°F
December 543.5°F45.9°F43.5°F51.1°F
December 645.5°F45.9°F43.2°F50.9°F
December 745.7°F45.5°F42.6°F50.9°F
December 841°F45.1°F41°F50.2°F
December 943.9°F45.7°F41.7°F49.6°F
December 1043°F46.8°F42.1°F49.8°F
December 1143°F46.9°F41.2°F48.9°F
December 1243.3°F45.5°F41°F48.2°F
December 1342.3°F45.9°F40.8°F48.6°F
December 1441.9°F45.1°F40.3°F48.7°F
December 1541.5°F45°F40.5°F52.2°F
Day 2024 2023 Min Max
December 1641.2°F44.4°F40.1°F50.9°F
December 1743.5°F44.1°F41.2°F50.4°F
December 1843.2°F46°F39.6°F49.1°F
December 1943.7°F44.8°F39.4°F48.7°F
December 2043°F43.3°F40.1°F48°F
December 2142.4°F43°F37.8°F47.7°F
December 2239.2°F43°F37.9°F47.5°F
December 2340.3°F43°F37.9°F47.7°F
December 2440.3°F43°F35.8°F48.4°F
December 2539.2°F42.8°F36.5°F48.6°F
December 2640.5°F42.6°F37°F48°F
December 2738.8°F42.6°F36.9°F47.7°F
December 2839.2°F44.1°F36.9°F47.5°F
December 2939.9°F43.9°F37.6°F48.2°F
December 3042.1°F45.3°F36.3°F48.7°F
December 3143°F44.8°F37°F48.7°F
Dover water temp chart in December

Average water temperature in Dover in December over a decade

20152016201720182019
48.7°F44.4°F44.6°F42.8°F42.3°F
20202021202220232024
45.3°F46.2°F43.3°F44.8°F42.8°F

Dover sea state in December

Chart comparing the height of waves in Dover 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 Dover in December

Dover 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
Villas45.3°F37.2°F54°F
Wildwood Crest47.5°F38.8°F56.1°F
Lewes47.3°F38.8°F55.4°F
Cape May47.8°F39°F56.5°F
Diamond Beach48.2°F39°F56.7°F
Wildwood48.2°F38.7°F56.7°F
Rehoboth Beach47.8°F39.2°F55.9°F
Dewey beach47.8°F39.2°F55.9°F
Stone Harbor48.2°F38.7°F56.7°F
Long Neck47.7°F39°F55.9°F

Delaware photo gallery

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  • rural Delaware Bay, middle section, Nantuxent Cove, picture taken at Money Island NJ

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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 Dover 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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