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Water temperature in Silver Bay (MN) in September

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Is it warm enough to swim in Silver Bay in September? Average water temperature in Silver Bay in September is 58.5°F and therefore is not suitable for comfortable swimming. The warmest water in Silver Bay in September is 66.6°F, and the coldest is 47.7°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Silver Bay

Changes water temperature in Silver Bay in September 2025, 2024

To get an accurate forecast for the water temperature in Silver Bay for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Silver Bay, 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 160.8°F61.7°F56.5°F63.7°F
September 262.1°F62.2°F55.9°F63.7°F
September 361.7°F63.1°F55°F64.4°F
September 461.3°F63.1°F53.2°F65.8°F
September 561°F62.6°F52.3°F65.7°F
September 659.9°F63.1°F52.7°F65.3°F
September 757.6°F62.6°F52.9°F63.7°F
September 857.2°F60.8°F53.2°F63.5°F
September 957.4°F60.3°F52.5°F63.5°F
September 1055.9°F60.1°F52.7°F62.8°F
September 1156.3°F60.6°F52.3°F63°F
September 1255.4°F62.2°F50.7°F62.2°F
September 1356.7°F62.6°F50.2°F63.5°F
September 1458.6°F62.4°F49.6°F63.7°F
September 1558.8°F63°F50.5°F63°F
Day 2025 2024 Min Max
September 1657°F63°F51.1°F64°F
September 1760.8°F64.9°F50.7°F64.9°F
September 1860.6°F65.8°F49.6°F65.8°F
September 1960.3°F66.6°F49.6°F66.6°F
September 2059.9°F65.3°F49.6°F65.3°F
September 2157.9°F64.9°F48.6°F64.9°F
September 2257.7°F64.6°F48°F64.6°F
September 2355.4°F62.2°F47.7°F62.2°F
September 2457.2°F62.2°F48.4°F62.2°F
September 25 62.2°F50.2°F62.2°F
September 26 63°F50.4°F63°F
September 27 63.1°F49.8°F63.1°F
September 28 63.5°F50.4°F63.5°F
September 29 63.5°F50.5°F63.5°F
September 30 63.1°F50.4°F63.1°F
Silver Bay water temp chart in September

Average water temperature in Silver Bay in September over a decade

20152016201720182019
57.2°F59.9°F60.1°F61.3°F52°F
20202021202220232024
54.9°F59.7°F58.6°F61.9°F63°F

Silver Bay sea state in September

Chart comparing the height of waves in Silver Bay 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 Silver Bay in September

Silver Bay water temperature during other months:

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

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
Beaver Bay58.5°F47.3°F66.7°F
Schroeder58.3°F46.2°F66.2°F
Herbster60.3°F50.5°F67.6°F
Cornucopia60.6°F51.3°F68.4°F
Tofte58.3°F46.4°F66°F
Port Wing60.3°F50.7°F66.7°F
Knife River59.9°F47.5°F67.1°F
Lutsen58.1°F46.8°F67.1°F
French River60.6°F48.2°F68.7°F
Madeline Island62.2°F54.9°F70.9°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 Silver Bay 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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