Grand Bay water temperature

Grand Bay, Bayou Heron · Sea/Coast

The current water temperature at Grand Bay is 31.3 °C (as of September 1, 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.

31.3 °C

Measured: September 1, 2026 · continuously updated

💧 Water 31.3° · ☀️ Air 28.4° · high today 32.2°

Nearby waters

Grand Bay, Bangs Lake · 8.7 km away32.2 °C Gulf of Mexico, Pascagoula NOAA Lab, MS · 16.1 km away30.0 °C Gulf of Mexico, Pascagoula NOAA Lab · 16.1 km away30.1 °C Mississippi Sound at Usgs Round Island Light, Mississippi · 21.0 km away31.0 °C Gulf of Mexico, Dauphin Island Sea Lab, AL · 36.5 km away30.3 °C

More measuring points: Grand Bay

Bangs Lake32.2 °C

Frequently asked questions

Can you swim at Grand Bay right now?
The current water temperature is 31.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Grand Bay?
Currently 31.3 °C (updated continuously).

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