Atlantic water temperature

Atlantic, Portland, ME · Sea/Coast

The current water temperature at Atlantic is 18.0 °C (as of August 29, 2026, source: NOAA NDBC).

The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.

18.0 °C

Measured: August 29, 2026 · continuously updated

💧 Water 18.0° · ☀️ Air 20.3° · high today 22.5°

Temperature trend of recent weeks

Water quality

Official EPA rating: good

Nearby waters

Atlantic, Portland · 0.3 km away18.1 °C Atlantic, 12 NM Southeast of Portland,ME · 16.9 km away18.5 °C Atlantic, Old Orchard Beach · 18.7 km away18.0 °C Atlantic, Ogunquit Beach · 52.9 km away15.9 °C Atlantic, Central Maine Shelf · 71.9 km away17.1 °C

More measuring points: Atlantic

South Port Everglades38.6 °C Taylor River, FL32.9 °C Marathon / Sombrero Beach32.8 °C Vaca Key, FL32.8 °C Vaca Key, Florida Bay32.8 °C Key West32.5 °C

Frequently asked questions

Can you swim at Atlantic right now?
The current water temperature is 18.0 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Atlantic?
Currently 18.0 °C (updated continuously).

How is the water quality at Atlantic?
The official classification is: good.

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