BrrChecker

Lake Superior water temperature

Lake Superior, Oliver Bridge · Sea/Coast

The current water temperature at Lake Superior is 17.7 °C (as of September 28, 2026, source: NOAA NERRS SWMP).

The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.

17.7 °C
Measured: September 28, 2026 · continuously updated
💧 Water 17.7° · ☀️ Air 12.6°

Water quality

Official EPA rating: excellent

Nearby waters

Lake Superior, Pokegama Bay · 5.3 km away17.6 °CLake Superior, Blatnik Bridge · 12.8 km away13.6 °CLake Superior, Wisconsin Point · 15.6 km away13.3 °CLake Superior, Duluth · 15.6 km away14.5 °CSt. Louis River, Scanlon, Minnesota · 17.3 km away14.1 °C

More measuring points: Lake Superior

Duluth-Offshore Buoy(LLO2)18.8 °CNorth Entry Buoy, North Keweenaw Peninsula18.6 °CPokegama Bay17.6 °CDuluth14.5 °CS.W. Pier, St. Marys River14.3 °CLittle Rapids14.0 °C

Frequently asked questions

Can you swim at Lake Superior right now?
The current water temperature is 17.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Lake Superior?
Currently 17.7 °C (updated continuously).

How is the water quality at Lake Superior?
The official classification is: excellent.

Open in the BrrChecker app

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