Lake Superior water temperature in March

Is Lake Superior warm enough to swim in spring? In March water temperature throughout Lake Superior is not yet warm enough for swimming and does not exceed 68°F. Based on average water temperature observations over the past ten years, the warmest water temperature in Lake Superior in March was 40.5°F (in Sault Sainte Marie), and the coldest 32.4°F (in Sault Ste. Marie). To find out the sea temperature today and in the coming days, go to Current sea temperature in Lake Superior

Lake Superior surface temperature in March

Lake Superior cities and resorts with the values of the average water temperature in March in recent years.
For more detailed information about water temperature, surf forecast, weather and time of sunrise and sunset in any specific area of your interest, just click on a city name. For ease of search, all places are also grouped by the first letter of the name.

To find out what the water temperature was in Lake Superior any day over a period of the last ten years, select the month

Places with the warmest average water temperature in Lake Superior in March. Also indicated are the maximum and minimum temperatures in March 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.