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Water temperature in Madison (WI) in December

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Is it warm enough to swim in Madison in December? Average water temperature in Madison in December is 37.2°F and therefore is not suitable for comfortable swimming. The warmest water in Madison in December is 42.8°F, and the coldest is 33.8°F. To find out the water temperature today and in the coming days, go to Current water temperature in Madison

Changes water temperature in Madison in December 2025, 2024

To get an accurate forecast for the water temperature in Madison for any chosen month, compare two years within a 10 year range using the chart below.

You can choose any other years:

Year 1:   Year 2:


Day 2025 2024
December 1 39.2°F
December 2 39.2°F
December 3 39.2°F
December 4 39.2°F
December 5 37.4°F
December 6 35.6°F
December 7 35.6°F
December 8 35.6°F
December 9 35.6°F
December 10 35.6°F
December 11 35.6°F
December 12 33.8°F
December 13 33.8°F
December 14  
December 15  
Day 2025 2024
December 16  
December 17 33.8°F
December 18 33.8°F
December 19  
December 20  
December 21  
December 22  
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December 24  
December 25  
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Madison 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 December?

Want to know where the water temperature in December 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

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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 Madison 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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