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Water temperature in Harbor Springs (MI) in September

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Is it warm enough to swim in Harbor Springs in September? Average water temperature in Harbor Springs in September is 66.9°F and therefore is not suitable for comfortable swimming. The warmest water in Harbor Springs in September is 72°F, and the coldest is 62.1°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Harbor Springs

Changes water temperature in Harbor Springs in September 2025, 2024

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

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
September 167.3°F68.7°F66.4°F71.8°F
September 267.8°F68°F66.7°F72°F
September 366.9°F67.8°F66.4°F71.8°F
September 466.7°F68.4°F66.4°F71.6°F
September 5 68.4°F65.8°F71.2°F
September 6 68.2°F65.7°F71.2°F
September 7 67.8°F65.3°F71.4°F
September 8 67.1°F65.1°F71.4°F
September 9 66.6°F65.3°F71.4°F
September 10 66.4°F65.1°F70.9°F
September 11 66.6°F64.8°F70.3°F
September 12 66.4°F65.1°F70.2°F
September 13 67.1°F64.6°F70°F
September 14 66.9°F63.1°F70.2°F
September 15 66.4°F63.3°F70°F
Day 2025 2024 Min Max
September 16 68.4°F63.5°F70.2°F
September 17 68.4°F63.5°F70.5°F
September 18 67.8°F63.5°F69.6°F
September 19 68.2°F63°F69.3°F
September 20 68°F62.8°F69.4°F
September 21 67.8°F62.4°F69.1°F
September 22 67.5°F62.2°F68.7°F
September 23 67.5°F62.1°F68.2°F
September 24 66.9°F62.2°F68.7°F
September 25 66.4°F62.4°F68.9°F
September 26 66°F63°F68.9°F
September 27 66.4°F62.2°F68°F
September 28 66.6°F63°F67.5°F
September 29 66.9°F63.1°F67.1°F
September 30 66.2°F62.1°F66.6°F
Harbor Springs water temp chart in September

Average water temperature in Harbor Springs in September over a decade

20152016201720182019
68.5°F69.4°F66.6°F67.8°F65.3°F
20202021202220232024
65.5°F68°F68.7°F65.3°F67.3°F

Harbor Springs sea state in September

Chart comparing the height of waves in Harbor Springs 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.

Waves height in Harbor Springs in September

Harbor Springs water temperature during other months:

You can also view information about water temperature for other months by clicking on the month button below

Michigan Lake water temperatures in September

Where is the warm sea water in September?

Want to know where the water temperature in September is good for swimming? Select the continent of interest, the day of the month and the required water temperature

Region
Date (day and month)
Water temperature: min 60°F
 Average temperature  Maximum temperature

Temperature in neighboring cities

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

AvrMinMax
Little Traverse Bay66.9°F61.5°F72°F
Petoskey66.9°F61.5°F72°F
Charlevoix66.4°F61°F71.4°F
Sturgeon Bay65.5°F59.7°F71.6°F
Fisherman Island66.4°F60.6°F71.4°F
Wilderness State Park64.6°F58.3°F71.6°F
Beaver Island65.8°F60.3°F71.4°F
Saint Ignace63.3°F56.5°F72.3°F
Evergreen Shores62.8°F56.1°F71.6°F
Mackinac Island62.8°F56.1°F70.5°F

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[1] - The "Blue Flag" is awarded to beaches which fulfill a number of criteria, including: the quality of the bathing water, which must be in accordance with the relevant European Union Directive environmental education and information and beach area management and safety.

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Our report for Harbor Springs 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.

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