World sea water temperatures

Water temperature in Dennis (MA) in December

Is it warm enough to swim in Dennis in December? Average water temperature in Dennis in December is 44.8°F and therefore is not suitable for comfortable swimming. The warmest sea in Dennis in December is 51.1°F, and the coldest is 37.6°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Dennis

Changes water temperature in Dennis in December 2024, 2023

To get an accurate forecast for the water temperature in Dennis for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Dennis, 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 147.1°F46.4°F45.1°F51.1°F
December 247.5°F47.1°F45.1°F50°F
December 345.5°F47.5°F44.8°F50.2°F
December 446.2°F45.9°F44.8°F49.8°F
December 543.2°F47.1°F43°F49.6°F
December 643.7°F47.1°F43.7°F49.3°F
December 744.4°F43.9°F43.5°F49.3°F
December 845.1°F45.1°F44.2°F49.5°F
December 943.9°F45.5°F43.9°F49.1°F
December 1044.6°F43.7°F43.7°F48.7°F
December 1145°F45.1°F43.3°F48.2°F
December 1244.6°F45°F42.3°F48.2°F
December 1344.2°F44.6°F42.1°F48.2°F
December 1443°F43.2°F41.9°F47.8°F
December 1544.1°F42.3°F41.4°F49.5°F
Day 2024 2023 Min Max
December 1643.7°F43.3°F41.4°F48.7°F
December 1742.3°F44.1°F41.2°F48.7°F
December 1844.6°F46°F40.8°F48.7°F
December 1943.7°F45.7°F39.9°F47.5°F
December 2044.2°F45.1°F39.6°F46.9°F
December 2144.2°F44.4°F40.5°F46.8°F
December 2243.5°F41.9°F39.2°F46.8°F
December 2343.5°F43.2°F40.6°F46.6°F
December 2443.5°F43.7°F38.8°F46.9°F
December 2543.3°F44.4°F39.7°F46.9°F
December 2640.5°F44.2°F39.7°F46.4°F
December 2741.2°F44.2°F37.9°F46.6°F
December 2841.5°F44.4°F39.6°F46.6°F
December 2942.1°F44.4°F37.6°F46.4°F
December 3040.1°F45.1°F39.6°F46°F
December 3141°F45.1°F39.7°F46.9°F
Dennis water temp chart in December

Average water temperature in Dennis in December over a decade

20152016201720182019
47.7°F44.8°F44.8°F43.2°F42.4°F
20202021202220232024
44.8°F45.1°F43.9°F44.8°F43.7°F

Dennis sea state in December

Chart comparing the height of waves in Dennis 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 Dennis in December

Dennis 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
Harborview Beach44.8°F37.6°F51.1°F
Chapin Beach44.8°F38.5°F51.1°F
Orleans45.3°F40.1°F50.9°F
Skaket Beach45.3°F40.1°F50.9°F
First Encounter Beach45.3°F40.1°F50.9°F
Crosby Landing Beach45.3°F40.1°F50.9°F
Linnell Landing Beach45.3°F40.1°F50.9°F
Ellis Landing beach45.3°F40.1°F50.9°F
Rock Harbor Beach45.3°F40.1°F50.9°F
Thumpertown Beach45.3°F40.1°F50.9°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 Dennis 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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