World sea water temperatures

Water temperature in Casco Bay (ME) in December

Is it warm enough to swim in Casco Bay in December? Average water temperature in Casco Bay in December is 45.3°F and therefore is not suitable for comfortable swimming. The warmest sea in Casco Bay in December is 50.9°F, and the coldest is 40.3°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Casco Bay

Changes water temperature in Casco Bay in December 2024, 2023

To get an accurate forecast for the water temperature in Casco Bay for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Casco Bay, 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 147.8°F48°F45.5°F50.9°F
December 247.7°F47.8°F45.3°F50.7°F
December 347.5°F47.7°F45.3°F50.5°F
December 447.3°F47.5°F45°F50.7°F
December 547.3°F46.8°F44.6°F50.5°F
December 647.1°F46.4°F44.2°F50.9°F
December 746.9°F45.9°F44.1°F50°F
December 846.6°F45.9°F43.9°F49.6°F
December 946.8°F45.7°F43.7°F50.4°F
December 1046.4°F45.9°F43.5°F50.2°F
December 1146°F45.9°F43.5°F49.8°F
December 1245.7°F46°F43.3°F49.5°F
December 1345.5°F46.2°F43.2°F49.8°F
December 1444.6°F45.9°F43°F48.9°F
December 1544.6°F46.4°F42.8°F48.7°F
Day 2024 2023 Min Max
December 1644.1°F45.7°F42.6°F48.4°F
December 1745°F45.7°F42.3°F49.1°F
December 1844.1°F46.8°F41.9°F48.7°F
December 1944.1°F45.9°F41.7°F48°F
December 2044.2°F44.6°F41.7°F48.4°F
December 2143.7°F44.4°F41.9°F47.7°F
December 2242.6°F42.3°F41.9°F46.6°F
December 2343°F42.1°F41.5°F47.3°F
December 2443.3°F42.6°F41.5°F47.3°F
December 2542.8°F43.2°F41.5°F46.4°F
December 2642.1°F42.6°F41°F46.8°F
December 2742.3°F42.8°F41.4°F46.6°F
December 2842.1°F42.8°F41°F45.9°F
December 2942.3°F42.8°F41.5°F45.7°F
December 3043.2°F42.6°F41°F45.9°F
December 3143°F42.3°F40.3°F45.9°F
Casco Bay water temp chart in December

Average water temperature in Casco Bay in December over a decade

20152016201720182019
46.4°F47.5°F45.1°F43.5°F44.4°F
20202021202220232024
44.2°F48.6°F45.7°F45.1°F44.8°F

Casco Bay sea state in December

Chart comparing the height of waves in Casco Bay 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 Casco Bay in December

Casco Bay 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
Bailey Island45.1°F40.5°F50.5°F
Peaks Island45.1°F40.1°F51.3°F
Yarmouth44.6°F39.6°F49.6°F
Portland45°F39.9°F51.1°F
Scarborough45.3°F40.5°F51.3°F
Georgetown45.9°F40.8°F50.9°F
Pine Point45.3°F40.5°F50.9°F
Boothbay Harbor45.9°F40.8°F50.9°F
North Bath45.3°F40.6°F50.5°F
Old Orchard Beach45.3°F40.8°F50.7°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 Casco Bay 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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