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Water temperature in Winthrop Harbor (IL) in July

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Is it warm enough to swim in Winthrop Harbor in July? Average water temperature in Winthrop Harbor in July is 69.4°F and therefore suitable for comfortable swimming. The warmest water in Winthrop Harbor in July is 77.4°F, and the coldest is 58.3°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Winthrop Harbor

Changes water temperature in Winthrop Harbor in July 2025, 2024

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

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024 Min Max
July 170°F65.5°F58.3°F70°F
July 271.1°F65.1°F59.2°F71.1°F
July 372°F65.5°F61°F72.1°F
July 472.9°F66.6°F61.5°F74.1°F
July 572.1°F67.8°F61.3°F74.7°F
July 669.6°F68.2°F63.5°F75.7°F
July 768.9°F68.7°F62.2°F76.5°F
July 868.2°F69.3°F61.7°F74.8°F
July 968.9°F70°F61.9°F75.9°F
July 1069.1°F70.3°F63°F74.5°F
July 1170°F70.5°F63.5°F73°F
July 1270.9°F71.6°F64.8°F73.9°F
July 1371.4°F72.5°F64.2°F74.3°F
July 1471.4°F71.6°F62.8°F74.5°F
July 1573°F70.7°F63.1°F74.8°F
Day 2025 2024 Min Max
July 1674.5°F71.8°F63°F75.4°F
July 1769.6°F72.7°F64.4°F75.7°F
July 1870°F72.5°F64.9°F76.3°F
July 1970.2°F72.5°F65.3°F75.4°F
July 2068.9°F72.3°F66.2°F74.8°F
July 2169.6°F72.3°F65.8°F75°F
July 2270.2°F73°F67.3°F75.7°F
July 2371.2°F73.4°F66.6°F76.6°F
July 2471.1°F72.7°F66.2°F76.8°F
July 2571.2°F73°F65.3°F76.6°F
July 2672.1°F73.2°F65.7°F75.6°F
July 2773.9°F73.4°F65.8°F75°F
July 2876.5°F73.8°F64.2°F76.5°F
July 2977.4°F73.4°F64.2°F77.4°F
July 3076.8°F74.5°F64.2°F76.8°F
July 3174.3°F75.6°F65.7°F76.1°F
Winthrop Harbor water temp chart in July

Average water temperature in Winthrop Harbor in July over a decade

20162017201820192020
71.1°F68°F69.6°F67.8°F73.4°F
20212022202320242025
68.2°F68.4°F68.7°F71.1°F71.4°F

Winthrop Harbor sea state in July

Chart comparing the height of waves in Winthrop Harbor in July 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 Winthrop Harbor in July

Winthrop Harbor water temperature during other months:

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

Water temperature at Lake Michigan in July

Where is the warm sea water in July?

Want to know where the water temperature in July 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 July. In addition, the maximum and minimum water temperatures for that month, recorded over the last decade, are shown

AvrMinMax
Illinois Beach State Park69.6°F59°F77.2°F
Simmons Island Beach68.7°F57.4°F76.5°F
Tower Road Beach70.5°F59.9°F77.7°F
Glencoe70.5°F59.9°F77.7°F
Oak Creek67.8°F57.2°F76.1°F
Winnetka70.5°F59.7°F77.9°F
Wilmette70.7°F59.7°F77.9°F
Evanston70.9°F59.7°F77.9°F
Rogers Park70.9°F59.7°F77.9°F
Montrose Beach70.9°F60.1°F77.9°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 Winthrop Harbor 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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