Atlantic water temperature
Atlantic, Key West, FL · Sea/Coast
The current water temperature at Atlantic is 30.4 °C (as of October 14, 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.
Water quality
Official EPA rating: excellentMeasurement series & statistics
This measurement series includes 415 data points since August 21, 2026.
Lowest recorded value: 28.1 °C on October 2, 2026 · highest value: 33.3 °C on September 4, 2026.
In October, temperatures have ranged between 28.1 °C and 30.8 °C.
The current value is 0.9 °C above the October average of this series.
Nearby waters
More measuring points: Atlantic
Frequently asked questions
Can you swim at Atlantic right now?
The current water temperature is 30.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Atlantic?
Currently 30.4 °C (updated continuously).
How warm is at Atlantic in October?
In October, the water temperature recently averaged 29.5 °C.
When is the water warmest at Atlantic?
Across the measurement record, August is on average the warmest month (32.5 °C).
How is the water quality at Atlantic?
The official classification is: excellent.
