Lake St. Clair water temperature

Lake St. Clair, Lake St Clair · Lake

The current water temperature at Lake St. Clair is 21.7 °C (as of September 1, 2026, source: NOAA NDBC).

Lakes stratify in summer: bathing-warm on top, markedly colder a few metres down. Measurements are taken at the surface — right where you swim.

21.7 °C

Measured: September 1, 2026 · continuously updated

💧 Water 21.7° · ☀️ Air 27.3° · high today 31.8°

Temperature trend of recent weeks

Measurement series & statistics

This measurement series includes 1171 data points since July 4, 2026.

Lowest recorded value: 21.3 °C on August 24, 2026 · highest value: 27.0 °C on July 15, 2026.

Nearby waters

Lake Erie, Algonac · 16.2 km away21.7 °C Clinton River at Moravian Drive at Mt. Clemens, Michigan · 20.1 km away21.5 °C Clinton River at Sterling Heights, Michigan · 29.9 km away21.0 °C Red Run at Ryan Road near Warren, Michigan · 31.8 km away22.5 °C River Rouge at Detroit, Michigan · 50.2 km away21.3 °C

Frequently asked questions

Can you swim at Lake St. Clair right now?
The current water temperature is 21.7 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Lake St. Clair?
Currently 21.7 °C (updated continuously).

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