Raritan Bay at Keansburg, New Jersey water temperature
Raritan Bay at Keansburg, New Jersey · Sea/Coast
The current water temperature at Raritan Bay at Keansburg is 23.3 °C (as of September 20, 2026, source: USGS).
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 111 data points since August 26, 2026.
Lowest recorded value: 23.1 °C on September 19, 2026 · highest value: 27.7 °C on August 26, 2026.
In September, temperatures have ranged between 23.1 °C and 27.2 °C.
The current value is 1.7 °C below the September average of this series.
Nearby waters
Frequently asked questions
Can you swim at Raritan Bay at Keansburg right now?
The current water temperature is 23.3 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Raritan Bay at Keansburg?
Currently 23.3 °C (updated continuously).
How warm is at Raritan Bay at Keansburg in September?
In September, the water temperature recently averaged 25.0 °C.
