Why I Swim in Lake Superior

Photo credit: Jan Wilberg 2014

Lake Superior is very cold. Today, the surface temperature of the lake in front of our house in Grand Marais, Michigan, was between 54 and 56 degrees according to the Great Lakes Coastal Forecasting System.

By the end of August, the water will be warmer. By Labor Day, it will be as warm as it will get. Then the temperature will go in the other direction until the ice forms into giant ridges on the shore and gathers…