World sea water temperatures

Water temperature in Deer Isle (ME) in December

Is it warm enough to swim in Deer Isle in December? Average water temperature in Deer Isle in December is 44.8°F and therefore is not suitable for comfortable swimming. The warmest sea in Deer Isle in December is 49.3°F, and the coldest is 39.9°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Deer Isle

Changes water temperature in Deer Isle in December 2024, 2023

To get an accurate forecast for the water temperature in Deer Isle for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Deer Isle, 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 146.6°F46°F45°F49.3°F
December 246.4°F46.2°F44.8°F49.3°F
December 346°F46°F44.6°F49.3°F
December 446.4°F45.9°F44.4°F49.1°F
December 546.2°F46°F43.3°F48.6°F
December 645.3°F45.7°F43.9°F48.6°F
December 744.6°F45.1°F43.2°F48.2°F
December 844.2°F44.4°F43.3°F48.2°F
December 945.3°F44.2°F43°F48°F
December 1045.1°F44.2°F42.8°F47.5°F
December 1145°F44.6°F42.3°F47.5°F
December 1243.9°F44.6°F42.6°F47.5°F
December 1344.2°F44.2°F42.3°F47.3°F
December 1443.9°F43.7°F42.3°F46.9°F
December 1543.9°F43.7°F42.3°F47.1°F
Day 2024 2023 Min Max
December 1643°F43.2°F42.1°F46.8°F
December 1742.8°F44.4°F41.9°F46.8°F
December 1843°F45.5°F41.2°F46.8°F
December 1943.2°F44.4°F41.2°F46.8°F
December 2043.2°F43.5°F41.4°F46.2°F
December 2143.2°F43.5°F41.2°F46.4°F
December 2242.1°F42.8°F40.8°F46.2°F
December 2342.3°F42.8°F41.2°F46.2°F
December 2441.5°F42.4°F41.2°F46°F
December 2542.1°F42.6°F41°F45.7°F
December 2641.2°F42.6°F40.8°F45.5°F
December 2741.4°F42.4°F40.8°F45.3°F
December 2841.2°F42.4°F40.8°F45°F
December 2941.7°F42.3°F40.5°F45°F
December 3041.9°F42.3°F40.3°F44.6°F
December 3140.5°F42.3°F39.9°F44.1°F
Deer Isle water temp chart in December

Average water temperature in Deer Isle in December over a decade

20152016201720182019
46.2°F46.2°F46.2°F43.3°F43°F
20202021202220232024
45.3°F46°F45°F44.1°F43.5°F

Deer Isle sea state in December

Chart comparing the height of waves in Deer Isle 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 Deer Isle in December

Deer Isle 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
Stonington45°F40.3°F49.5°F
Penobscot Bay44.4°F39.2°F49.3°F
Sedgwick44.8°F39.6°F49.6°F
Islesboro44.2°F39°F49.3°F
Vinalhaven45.1°F39.7°F49.6°F
Union River Bay45°F39.6°F49.8°F
Marshall Island46.4°F41.2°F51.1°F
Northport44.1°F38.8°F48.7°F
Swans Island46.2°F41.2°F50.7°F
Ellsworth45°F39.7°F49.6°F

Maine photo gallery

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  • Schooner Timberwind

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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 Deer Isle 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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