Great Lakes water temperature in December

In December sea water temperature all along the Great Lakes coast is not yet warm enough for swimming and does not exceed 68°F. The warmest average water temperature Great Lakes in December is 44.6°F (in Sarnia), and the coldest sea surface temperature is 35.8°F (in Duluth). To find out the water temperature today and in the coming days, go to Current water temperature of the Great Lakes

List of Great Lakes

Where you can swim in the Great Lakes in December?

This data on the average monthly surface water temperature on the Great Lakes coast in December. To see the details, select the country and then the city of your interest. Besides water temperature, you can also get information about the weather for today, tomorrow and the upcoming days, surf forecast, as well as the data on sunrise/sunset and moonrise/moonset at a given point on any given day.

Countries bordering the Great Lakes

Places with the warmest average water temperature in Great Lakes in December. Also indicated are the maximum and minimum temperatures in December for these locations based on observations over the past 10 years

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Our report for Great Lakes 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.