Delaware and Raritan Canal at Port Mercer, New Jersey water temperature
Delaware and Raritan Canal at Port Mercer, New Jersey · River
The current water temperature at Delaware and Raritan Canal at Port Mercer is 22.2 °C (as of September 20, 2026, source: USGS).
A river can change temperature within hours — snowmelt, rain or power-plant operations show up immediately. That is why the measured value counts here, not an estimate.
Measurement series & statistics
This measurement series includes 116 data points since August 26, 2026.
Lowest recorded value: 22.2 °C on September 20, 2026 · highest value: 25.5 °C on September 5, 2026.
In September, temperatures have ranged between 22.2 °C and 25.5 °C.
The current value is 1.8 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Delaware and Raritan Canal at Port Mercer right now?
The current water temperature is 22.2 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Delaware and Raritan Canal at Port Mercer?
Currently 22.2 °C (updated continuously).
How warm is at Delaware and Raritan Canal at Port Mercer in September?
In September, the water temperature recently averaged 24.0 °C.
