A high swimming risk will continue along southeastern Wisconsin beaches through 7 p.m. CDT Wednesday, September 23, 2026, making Lake Michigan conditions the main concern for shoreline visitors. Persistent east-northeast winds may be gusty along the lakefront, while lighter rain remains possible Monday, according to the National Weather Service Milwaukee/Sullivan.
Stay Out Of The Water And Away From Exposed Shoreline
The National Weather Service advises people to stay out of the water and away from piers, breakwalls and other exposed areas during the hazard. Those structures can be particularly dangerous when waves and currents are strong, and the agency says dangerous currents and breaking waves are common across the Great Lakes. More beach-safety guidance is available from the National Weather Service.
The warning concerns physical lake conditions, not necessarily water quality. The Wisconsin Department of Natural Resources says dangerous-current advisories can involve large waves and strong currents, including rip currents. The agency treats elevated E. coli levels in nearshore water as a separate reason for a beach advisory or closure.
Historical Risk Is Significant, But Not A Forecast
Historical data shows why current warnings should be taken seriously, without establishing that a particular incident has occurred now. The National Weather Service reported 13 current-related deaths at Lake Michigan beaches between Sheboygan and Kenosha from 2002 through 2020. That period covers a broad shoreline and multiple years; it does not measure the severity of the present conditions or indicate an ongoing trend.
More broadly, the National Weather Service Milwaukee/Sullivan says the Great Lakes averaged 12 drowning fatalities and 23 rescues caused by dangerous currents each year over a 10-year period. Those figures are regional historical context, not a count of current rescues or deaths connected to this week’s beach hazard.
Water-Quality Updates Are Separate
Visitors checking beach conditions should distinguish the lake’s wave-and-current risk from routine water-quality monitoring. Separately from weather-related hazards, the Milwaukee Health Department issues daily water-quality updates for Bradford, McKinley and South Shore beaches during the Memorial Day-to-Labor Day monitoring season.
Cooler conditions are expected to persist into Tuesday, with Wednesday trending cooler and drier, according to the National Weather Service Milwaukee/Sullivan. For anyone planning time along the shoreline, however, the active swimming-risk statement and conditions around the water matter more than the improving outlook on land.
