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St. Clair River water temperature

St. Clair River, Port Lambton (ECCC) · River

The current water temperature at St. Clair River is 22.0 °C (as of September 5, 2026, source: GLOS).

A river can change temperature within hours — snowmelt, rain or power-plant operations show up immediately. That is why the measured value counts here, not an estimate.

22.0 °C
Measured: September 5, 2026 · continuously updated
💧 Water 22.0° · ☀️ Air 18.2° · high today 25.4°

Nearby waters

Frequently asked questions

Can you swim at St. Clair River right now?
The current water temperature is 22.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at St. Clair River?
Currently 22.0 °C (updated continuously).

Open in the BrrChecker app

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