Lake Ontario water temperature
Lake Ontario, Sodus Point Nearshore Monitoring · Lake
The current water temperature at Lake Ontario is 23.0 °C (as of July 30, 2026, source: GLOS).
23.0 °C
Frequently asked questions
Can you swim at Lake Ontario right now?
The current water temperature is 23.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Lake Ontario?
Currently 23.0 °C (updated continuously).
