World sea water temperatures

Water temperature in Rockland (ME) in December

Is it warm enough to swim in Rockland in December? Average water temperature in Rockland in December is 44.2°F and therefore is not suitable for comfortable swimming. The warmest sea in Rockland in December is 48.7°F, and the coldest is 38.8°F. Average high air temperature in Rockland in December is 36°F, and average low temperature is 18°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Rockland

Changes water temperature in Rockland in December 2024, 2023

To get an accurate forecast for the water temperature in Rockland for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Rockland, 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°F44.8°F48.7°F
December 247.1°F46.8°F44.6°F48.4°F
December 347.1°F46°F44.4°F48.7°F
December 446.8°F45.3°F44.1°F48.7°F
December 546.6°F45.7°F43.5°F48.4°F
December 646°F44.8°F43.3°F48.6°F
December 746°F44.1°F42.8°F48.7°F
December 845.9°F44.4°F42.6°F48.2°F
December 945.5°F44.1°F42.1°F47.3°F
December 1045.1°F44.1°F41.9°F47.1°F
December 1145.1°F45.1°F41.5°F46.6°F
December 1244.2°F44.8°F41.5°F46.8°F
December 1344.2°F44.4°F41.4°F46.8°F
December 1443.7°F43.3°F40.6°F46.8°F
December 1543.9°F42.4°F41.2°F46.9°F
Day 2024 2023 Min Max
December 1643°F43.2°F41°F46.6°F
December 1743°F43.2°F40.6°F46.6°F
December 1843.3°F44.8°F40.3°F46.2°F
December 1942.8°F44.8°F40.3°F45.7°F
December 2042.6°F44.4°F39.9°F45.5°F
December 2142.4°F42.8°F40.1°F45.3°F
December 2241°F42.1°F39.9°F45.7°F
December 2341.4°F41.5°F40.1°F45.5°F
December 2441.2°F41.4°F40.1°F45.5°F
December 2541.2°F41.7°F39.9°F45.1°F
December 2640.5°F41.9°F39.7°F44.8°F
December 2740.6°F41.4°F39.2°F44.8°F
December 2840.6°F42.4°F39.2°F44.2°F
December 2940.6°F41.9°F39.2°F43.9°F
December 3040.8°F42.8°F39°F43.5°F
December 3140.1°F41.2°F38.8°F43.9°F
Rockland water temp chart in December

Average water temperature in Rockland in December over a decade

20152016201720182019
45.7°F45.1°F44.6°F41.9°F43.2°F
20202021202220232024
45.3°F45.7°F45.3°F43.7°F43.5°F

Rockland sea state in December

Chart comparing the height of waves in Rockland 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 Rockland in December

Weather and climate in Rockland in December

This data display average monthly climate indicators in Rockland in December based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature36°F
  • Average LOW temperature18°F
  • Average rainfall days13 days
  • Average rainfall127mm/5''
  • Average daylight9h
  • Average sunshine4h
  • Average UV index1

Rockland 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
Thomaston44.2°F38.8°F48.7°F
Rockport44.1°F38.7°F48.9°F
South Thomaston44.8°F39.2°F49.6°F
Saint George44.8°F39.2°F49.6°F
Lincolnville43.9°F38.7°F48.7°F
Penobscot Bay44.4°F39.2°F49.3°F
Vinalhaven45.1°F39.7°F49.6°F
Islesboro44.2°F39°F49.3°F
Waldoboro45.3°F39°F50.2°F
Northport44.1°F38.8°F48.7°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 Rockland 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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