World sea water temperatures

Water temperature in Lake Winnebago (WI) in September

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Is it warm enough to swim in Lake Winnebago in September? Average water temperature in Lake Winnebago in September is 68.5°F and therefore suitable for comfortable swimming. The warmest water in Lake Winnebago in September is 75.2°F, and the coldest is 60.3°F. To find out the sea temperature today and in the coming days, go to Current sea temperature in Lake Winnebago

Changes water temperature in Lake Winnebago in September 2025, 2024

To get an accurate forecast for the water temperature in Lake Winnebago for any chosen month, compare two years within a 10 year range using the chart below. In addition to the sea water temperature in Lake Winnebago, 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 169.4°F73.2°F67.6°F75.2°F
September 270.2°F72.1°F68°F74.7°F
September 370°F73°F68.4°F74.5°F
September 468.7°F71.2°F68.5°F74.7°F
September 567.5°F71.2°F67.5°F74.8°F
September 667.8°F70.9°F67.5°F74.8°F
September 767.1°F70.3°F67.1°F73.8°F
September 863.5°F68.2°F63.5°F73.2°F
September 963°F68°F63°F72.9°F
September 1063.3°F67.5°F63.3°F72.3°F
September 1164°F68.4°F64°F71.8°F
September 1263.9°F67.6°F63.9°F71.1°F
September 1363.9°F66.7°F63.9°F70.7°F
September 1466.4°F70.2°F64.6°F70.9°F
September 1568°F70.2°F64.2°F70.3°F
Day 2025 2024 Min Max
September 1667.5°F70.9°F63°F71.2°F
September 1768.7°F71.1°F63.1°F72.3°F
September 1869.3°F71.4°F63.1°F71.8°F
September 1969.6°F73.6°F63.3°F73.6°F
September 2069.3°F73°F62.8°F73°F
September 2168.5°F72.1°F61.7°F72.1°F
September 2268.7°F71.1°F61.9°F71.1°F
September 2369.8°F70.2°F62.1°F71.1°F
September 2468.7°F69.3°F61.7°F70.9°F
September 2567.6°F68.9°F61.7°F71.1°F
September 2669.4°F69.8°F62.2°F70.3°F
September 2768.9°F68.7°F62.4°F69.6°F
September 2868.7°F69.8°F62.1°F69.8°F
September 2969.1°F68.9°F61.7°F69.1°F
September 3069.1°F68.5°F60.3°F69.1°F
Lake Winnebago water temp chart in September

Average water temperature in Lake Winnebago in September over a decade

20162017201820192020
69.6°F67.8°F70.2°F67.5°F69.4°F
20212022202320242025
68.9°F69.1°F68.4°F70.2°F

Lake Winnebago sea state in September

Chart comparing the height of waves in Lake Winnebago 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 Lake Winnebago in September

Lake Winnebago 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
Oshkosh68.5°F60.3°F75.2°F
Sheboygan65.8°F57°F72.9°F
Kohler Andrae66.2°F57°F73°F
Cedar Grove65.8°F56.3°F73°F
Two Rivers64.8°F55.4°F72.7°F
Harrington Beach65.8°F56.5°F73°F
Suamico67.3°F59°F73.9°F
Port Washington65.7°F55.4°F73°F
Kewaunee64°F54.5°F71.6°F
Whitefish Bay64.9°F51.4°F73.2°F

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Our report for Lake Winnebago 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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