Lake Michigan water temperature

Lake Michigan, Atwater 20-meter buoy (ATW20) · Lake

The current water temperature at Lake Michigan is 21.0 °C (as of July 30, 2026, source: GLOS).

Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.

21.0 °C

Measured: July 30, 2026 · continuously updated

💧 Water 21.0° · ☀️ Air 6.2° · high today 9.5°

Nearby waters

Lake Michigan, Atwater Park, WI · 2.1 km away7.3 °C Milwaukee River, Milwaukee, Wisconsin · 4.8 km away11.8 °C Wilson Park Creek, Gmia Outfall 7 at Milwaukee, Wisconsin · 16.4 km away14.5 °C Root River, 60TH St near Caledonia, Wisconsin · 29.3 km away10.9 °C Root River, W. Eight Mile Rd near Caledonia, Wisconsin · 30.1 km away11.5 °C

More measuring points: Lake Michigan

Michigan City23.6 °C Ohio Street Beach22.9 °C Wilmette22.7 °C Little Traverse Bay22.4 °C Winthrop Harbor22.4 °C Chicago Pier22.0 °C

Frequently asked questions

Can you swim at Lake Michigan right now?
The current water temperature is 21.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Lake Michigan?
Currently 21.0 °C (updated continuously).

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