World sea water temperatures

Water temperature in Castine (ME) in December

Is it warm enough to swim in Castine in December? Average water temperature in Castine in December is 44.1°F and therefore is not suitable for comfortable swimming. The warmest sea in Castine in December is 48.7°F, and the coldest is 38.7°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Castine

Changes water temperature in Castine in December 2024, 2023

To get an accurate forecast for the water temperature in Castine for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Castine, 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°F46.9°F44.8°F48.6°F
December 245.5°F46.6°F44.8°F48.6°F
December 345.5°F46.4°F44.6°F48.7°F
December 445.1°F46.2°F44.4°F48.4°F
December 545.1°F46.8°F44.2°F48.2°F
December 645.3°F45.3°F44.1°F48°F
December 744.6°F45.3°F43.2°F47.7°F
December 844.1°F45.1°F43.3°F47.7°F
December 944.1°F44.8°F43°F47.1°F
December 1043.9°F44.6°F42.6°F46.9°F
December 1143.7°F43.2°F42.1°F46.9°F
December 1243.9°F43.9°F42.3°F46.6°F
December 1343.7°F41.7°F41.7°F46.2°F
December 1443.2°F42.8°F41.4°F46.2°F
December 1543.3°F43.2°F41.7°F46.4°F
Day 2024 2023 Min Max
December 1642.8°F42.6°F41.4°F46.2°F
December 1742.3°F43.2°F41.5°F46.2°F
December 1841.7°F45.9°F40.8°F45.9°F
December 1942.4°F43.7°F40.8°F45.7°F
December 2042.3°F43.5°F41°F45.3°F
December 2142.3°F43.7°F40.8°F45.3°F
December 2242.6°F43.5°F40.5°F45.3°F
December 2341.9°F42.6°F40.8°F45.1°F
December 2441.7°F42.4°F40.8°F45°F
December 2541.4°F42.1°F40.5°F44.6°F
December 2641.2°F41.9°F40.1°F44.1°F
December 2741°F41.7°F40.1°F43.9°F
December 2840.6°F41.5°F39.9°F43.9°F
December 2942.1°F41.4°F39.9°F43.7°F
December 3041.2°F41°F39.4°F43.5°F
December 3141.2°F41.9°F38.7°F43.2°F
Castine water temp chart in December

Average water temperature in Castine in December over a decade

20152016201720182019
45.1°F45.1°F44.6°F42.1°F42.6°F
20202021202220232024
44.8°F45.1°F45°F43.7°F43°F

Castine sea state in December

Chart comparing the height of waves in Castine 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 Castine in December

Castine 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
Searsport44.1°F38.7°F48.7°F
Stockton Springs44.1°F38.7°F48.7°F
Bayside44.1°F38.7°F48.6°F
Orland44.1°F38.5°F48.7°F
Winterport44.1°F38.5°F48.7°F
Northport44.1°F38.8°F48.7°F
Islesboro44.2°F39°F49.3°F
Surry44.8°F39.2°F49.5°F
Lincolnville43.9°F38.7°F48.7°F
Sedgwick44.8°F39.6°F49.6°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 Castine 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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