Water temperature in Isle Royale (MI) in February

Is it warm enough to swim in Isle Royale in February? Average water temperature in Isle Royale in February is 34.2°F and therefore is not suitable for comfortable swimming. The warmest water in Isle Royale in February is 36.9°F, and the coldest is 30.7°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Isle Royale

Changes water temperature in Isle Royale in February 2026, 2025

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

Average water temperature in Isle Royale in February 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 February. 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 Isle Royale 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.