Lake Superior water temperature
Lake Superior, Grand Marais, Lake Superior · Lake
The current water temperature at Lake Superior is 9.9 °C (as of August 7, 2026, source: NOAA CO-OPS).
9.9 °C
Frequently asked questions
Can you swim at Lake Superior right now?
The current water temperature is 9.9 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Lake Superior?
Currently 9.9 °C (updated continuously).
How warm is at Lake Superior in August?
In August, the water temperature recently averaged 9.7 °C.
