Shelter Island Sound water temperature
Shelter Island Sound, Shelter Island, New York · Sea/Coast
The current water temperature at Shelter Island Sound is 15.4 °C (as of November 6, 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 492 data points since September 7, 2026.
Lowest recorded value: 13.3 °C on November 2, 2026 · highest value: 24.6 °C on September 8, 2026.
In November, temperatures have ranged between 13.3 °C and 15.4 °C.
The current value is 1.4 °C above the November average of this series.
Nearby waters
More measuring points: Shelter Island Sound
Frequently asked questions
Can you swim at Shelter Island Sound right now?
The current water temperature is 15.4 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Shelter Island Sound?
Currently 15.4 °C (updated continuously).
How warm is at Shelter Island Sound in November?
In November, the water temperature recently averaged 14.0 °C.
When is the water warmest at Shelter Island Sound?
Across the measurement record, September is on average the warmest month (22.5 °C).
