Water temperature in M Street Beach (MA) in December

Is it warm enough to swim in M Street Beach in December? Average water temperature in M Street Beach in December is 44.8°F and therefore is not suitable for comfortable swimming. The warmest sea in M Street Beach in December is 50.2°F, and the coldest is 37.8°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in M Street Beach

Changes water temperature in M Street Beach in December 2025, 2024

To get an accurate forecast for the water temperature in M Street Beach for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in M Street Beach, the selected years in the table also show the values of the maximum and minimum temperatures on each of the days of December.

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Average water temperature in M Street Beach in December over a decade

You can also view information about water temperature for other months by clicking on the month button below

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

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Our report for M Street Beach 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.