Wisconsin — Water Temperature Today and Throughout the Year
Discover water temperatures in Wisconsin (United States), with real-time data and annual trends. Find all locations in the region and check the water temperature in them. We find every place where you can swim and show you the water temperature there today and throughout the year.
Water Temperature in Lakes and Rivers
Popular Lakes
Popular Rivers
Popular Places
Water Temperature and Swimming Overview
Regions and Map
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Water Temperature Trends
Wisconsin, known for its abundance of lakes and rivers, offers diverse water temperatures that vary significantly with the seasons. In summer, the state’s lakes and rivers typically warm up to 70°F to 80°F (21°C to 27°C), creating excellent conditions for swimming, boating, and fishing. Popular destinations like Lake Winnebago and the Wisconsin River become hubs for water-based recreation during these months. However, smaller, shallower lakes may warm faster and reach higher temperatures compared to deeper bodies of water.
As autumn sets in, water temperatures begin to cool, often ranging from 50°F to 65°F (10°C to 18°C), reflecting the seasonal drop in air temperatures. In winter, many lakes freeze over, with ice thick enough to support ice fishing, skating, and snowmobiling. Rivers may maintain some open water areas, but temperatures typically hover just above freezing, around 32°F to 35°F (0°C to 2°C).
Springtime sees gradual warming as ice melts and water temperatures rise from the 40°F to 55°F range (4°C to 13°C). This period is popular for early-season fishing and kayaking, though the water remains chilly. The seasonal shifts make Wisconsin’s waterways appealing for a wide range of activities throughout the year, catering to both summer enthusiasts and winter adventurers.