Atlantic water temperature
Atlantic, Marcus Hook · Sea/Coast
The current water temperature at Atlantic is 24.6 °C (as of September 20, 2026, source: NOAA CO-OPS).
The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.
Measurement series & statistics
This measurement series includes 1111 data points since July 22, 2026.
Lowest recorded value: 24.4 °C on September 15, 2026 · highest value: 29.0 °C on August 7, 2026.
In September, temperatures have ranged between 24.4 °C and 27.0 °C.
The current value is 1.2 °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 24.6 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Atlantic?
Currently 24.6 °C (updated continuously).
How warm is at Atlantic in September?
In September, the water temperature recently averaged 25.8 °C.
When is the water warmest at Atlantic?
Across the measurement record, August is on average the warmest month (27.2 °C).
