Water temperature in Big Bay de Noc (MI) in September

Is it warm enough to swim in Big Bay de Noc in September? Average water temperature in Big Bay de Noc in September is 64.6°F and therefore is not suitable for comfortable swimming. The warmest water in Big Bay de Noc in September is 70.9°F, and the coldest is 56.8°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Big Bay de Noc

Changes water temperature in Big Bay de Noc in September 2025, 2024

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

Average water temperature in Big Bay de Noc in September over a decade

Chart comparing the height of waves in Big Bay de Noc in September 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.

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 September. 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 Big Bay de Noc 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.