SXUS83 KGRR 221443 OMRGRR Other Marine Reports National Weather Service Grand Rapids MI 1043 AM EDT Sat Aug 22 2026 Lake Michigan Beach Reports Water Wave Flag Location Temp Height Color Ludington State Park 70 F 4 ft Red Mears State Park (Pentwater) 70 F 4 ft Red Duck Lake State Park 70 F 3 ft Red Muskegon State Park 71 F 3 ft Red Grand Haven State Park 73 F 4 ft Red Holland State Park 70 F 4 ft Red Disclaimer These observations are reported during the morning hours and may not be representative of conditions later in the day. Flag Definitions Green: OK to swim Yellow: Caution is urged Red: Hazardous to swim Safety Information Multiple beach hazards can develop when winds and waves increase. Multiple hazards include large waves, structural currents, rip currents and longshore currents. The latest swim hazard risk can be obtained from the following website: www.weather.gov/greatlakes/beachhazards $$