Atlantic water temperature

Atlantic, Portland, ME · Sea/Coast

The current water temperature at Atlantic is 15.8 °C (as of September 20, 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.

15.8 °C

Measured: September 20, 2026 · continuously updated

💧 Water 15.8° · ☀️ Air 9.1° · high today 14.9°

Temperature trend of recent weeks

Water quality

Official EPA rating: good

Measurement series & statistics

This measurement series includes 96 data points since August 29, 2026.

Lowest recorded value: 15.7 °C on September 18, 2026 · highest value: 18.0 °C on August 29, 2026.

In September, temperatures have ranged between 15.7 °C and 17.6 °C.

The current value is 1.0 °C below the September average of this series.

Nearby waters

Atlantic, Portland · 0.3 km away15.6 °C Atlantic, East End Beach · 1.4 km away15.6 °C Atlantic, Landing Beach · 2.1 km away15.6 °C Atlantic, 12 NM Southeast of Portland,ME · 16.9 km away15.2 °C Atlantic, Old Orchard Beach · 18.7 km away15.8 °C

More measuring points: Atlantic

South Port Everglades35.4 °C Trident Pier, Port Canaveral32.9 °C Taylor River, FL31.4 °C Garfield Bight, FL31.2 °C Johnson Key, FL31.0 °C Satan Shoal, FL (244)30.9 °C

Frequently asked questions

Can you swim at Atlantic right now?
The current water temperature is 15.8 °C. See live swimming conditions, weather and quality in the BrrChecker app.

How warm is the water at Atlantic?
Currently 15.8 °C (updated continuously).

How warm is at Atlantic in September?
In September, the water temperature recently averaged 16.8 °C.

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

← All waters · Warmest beaches & coasts today · Water temperature in United States