Lake Superior water temperature

Lake Superior, Pokegama Bay · Sea/Coast

The current water temperature at Lake Superior is 17.6 °C (as of September 17, 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.

17.6 °C

Measured: September 17, 2026 · continuously updated

💧 Water 17.6° · ☀️ Air 15.0° · high today 16.5°

Nearby waters

Lake Superior, Wisconsin Point · 10.3 km away16.5 °C Lake Superior, Duluth · 12.0 km away16.7 °C Lake Superior, Western Lake Superior · 20.8 km away16.2 °C St. Louis River at Scanlon, Minnesota · 21.8 km away17.9 °C Lake Superior, McQuade Harbor Nearshore, MN · 26.1 km away15.7 °C

More measuring points: Lake Superior

Duluth-Offshore Buoy(LLO2)18.8 °C North Entry Buoy, North Keweenaw Peninsula18.6 °C S.W. Pier, St. Marys River18.2 °C Whitefish Bay17.8 °C Breakers Beach17.6 °C North Entry Buoy, North Keweenaw Peninsu17.6 °C

Frequently asked questions

Can you swim at Lake Superior right now?
The current water temperature is 17.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Lake Superior?
Currently 17.6 °C (updated continuously).

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