Great Bay water temperature

Great Bay, Lamprey River · Sea/Coast

The current water temperature at Great Bay is 23.4 °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.

23.4 °C

Measured: September 1, 2026 · continuously updated

💧 Water 23.4° · ☀️ Air 17.9°

Nearby waters

Atlantic, Great Bay Buoy · 5.5 km away20.6 °C Atlantic, Seavey Island, ME · 15.6 km away15.4 °C Atlantic, Seavey Island · 15.7 km away15.9 °C Isinglass River at Rochester Neck Rd, near Dover, New Hampshire · 17.3 km away19.5 °C Atlantic, Hampton Beach · 21.7 km away20.6 °C

Frequently asked questions

Can you swim at Great Bay right now?
The current water temperature is 23.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Great Bay?
Currently 23.4 °C (updated continuously).

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