Lake Michigan water temperature

Lake Michigan, Salmon Unlimited Wisconsin · Lake

The current water temperature at Lake Michigan is 15.7 °C (as of August 31, 2026, source: NOAA NDBC).

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

15.7 °C

Measured: August 31, 2026 · continuously updated

💧 Water 15.7° · ☀️ Air 25.3° · high today 30.4°

Temperature trend of recent weeks

Measurement series & statistics

This measurement series includes 1273 data points since July 3, 2026.

Lowest recorded value: 15.7 °C on August 31, 2026 · highest value: 25.4 °C on July 15, 2026.

Nearby waters

Lake Michigan, Winthrop Harbor · 25.9 km away22.4 °C Lake Michigan, Winthrop Harbor Buoy, IL · 26.7 km away8.7 °C Root River at W. Eight Mile Rd near Caledonia, Wisconsin · 31.1 km away24.2 °C Root River at 60TH St near Caledonia, Wisconsin · 32.8 km away24.6 °C Wilson Park Creek at Gmia Outfall 7 at Milwaukee, Wisconsin · 35.4 km away21.6 °C

More measuring points: Lake Michigan

South Green Bay, WI24.0 °C Ohio Street Beach23.8 °C Michigan City23.6 °C Chicago Buoy23.0 °C Southern Lake Michigan Spotter23.0 °C Michigan City Buoy, IN22.8 °C

Frequently asked questions

Can you swim at Lake Michigan right now?
The current water temperature is 15.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Lake Michigan?
Currently 15.7 °C (updated continuously).

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