Atlantic water temperature
Atlantic, Ile-d'Houat, Treach Salus · Sea/Coast
The current water temperature at Atlantic is 18.6 °C (as of September 20, 2026, source: Atlasanté).
The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.
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Water quality
EU classification: excellentMeasurement series & statistics
This measurement series includes 589 data points since July 23, 2026.
Lowest recorded value: 18.3 °C on September 18, 2026 · highest value: 22.2 °C on August 16, 2026.
In September, temperatures have ranged between 18.3 °C and 21.0 °C.
The current value is 1.3 °C below the September 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 18.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Atlantic?
Currently 18.6 °C (updated continuously).
How warm is at Atlantic in September?
In September, the water temperature recently averaged 19.9 °C.
When is the water warmest at Atlantic?
Across the measurement record, July is on average the warmest month (20.9 °C).
How is the water quality at Atlantic?
The official classification is: excellent.
