World sea water temperatures

Water temperature in Monroe (MI) in September

Is it warm enough to swim in Monroe in September? Average water temperature in Monroe in September is 71.2°F and therefore suitable for comfortable swimming. The warmest water in Monroe in September is 79.2°F, and the coldest is 62.2°F. Average high air temperature in Monroe in September is 75°F, and average low temperature is 55°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Monroe

Changes water temperature in Monroe in September 2025, 2024

To get an accurate forecast for the water temperature in Monroe for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Monroe, 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 170.7°F77.4°F70.7°F79.2°F
September 271.2°F76.3°F69.8°F77.7°F
September 372°F73.9°F68°F77.4°F
September 471.8°F73.8°F68.2°F78.3°F
September 5 73.9°F66.9°F78.8°F
September 6 73.9°F67.5°F78.4°F
September 7 73.8°F67.3°F77°F
September 8 71.2°F67.1°F75.7°F
September 9 69.8°F66.7°F75.4°F
September 10 68.9°F66°F75.9°F
September 11 69.6°F65.7°F74.8°F
September 12 70.9°F65.8°F75.4°F
September 13 71.8°F66.2°F73.6°F
September 14 71.8°F66.7°F72.9°F
September 15 72.3°F67.5°F73.2°F
Day 2025 2024 Min Max
September 16 72.9°F68°F73.4°F
September 17 72.9°F68.4°F73.4°F
September 18 72.7°F68°F74.3°F
September 19 73°F67.3°F73.8°F
September 20 73.8°F66°F73.8°F
September 21 74.3°F65.1°F74.3°F
September 22 74.8°F64.4°F74.8°F
September 23 75°F64.6°F75°F
September 24 73.8°F64°F73.8°F
September 25 73.4°F63.3°F73.4°F
September 26 72.1°F63.3°F74.7°F
September 27 70.9°F62.2°F74.8°F
September 28 70.2°F62.4°F73.9°F
September 29 70°F62.6°F73.2°F
September 30 70°F62.4°F71.6°F
Monroe water temp chart in September

Average water temperature in Monroe in September over a decade

20152016201720182019
71.8°F72.7°F69.4°F72.5°F71.6°F
20202021202220232024
69.8°F72.1°F72°F70.7°F72.7°F

Monroe sea state in September

Chart comparing the height of waves in Monroe 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 Monroe in September

Weather and climate in Monroe in September

This data display average monthly climate indicators in Monroe in September based on our historical weather readings over a period of ten years. In addition to temperature, we include data on the number of rainy and sunny days so you can have all the information about your destination before your trip

  • Average HIGH temperature75°F
  • Average LOW temperature55°F
  • Average rainfall76mm/3''

Monroe 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
Woodland Beach70.9°F61.9°F78.8°F
Luna Pier71.1°F61.9°F78.8°F
Stony Point70.9°F62.2°F78.4°F
Rossford71.1°F61°F78.8°F
Toledo71.1°F61°F78.8°F
Detroit River70.5°F62.4°F78.1°F
Gibraltar70°F61.5°F77.7°F
Grosse Ile69.8°F60.8°F77.5°F
River Rouge69.8°F60.3°F77.4°F
Colchester71.4°F63°F78.6°F

Michigan photo gallery

  • Harbor sunrise
  • Rocky Gap Overlook August 10th 2022
  • Gorgeous winter morning
  • Freighters passing by

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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 Monroe 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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