Elkhorn Slough water temperature
Elkhorn Slough, Vierra Mouth · Sea/Coast
The current water temperature at Elkhorn Slough is 18.9 °C (as of September 20, 2026, source: NOAA NERRS SWMP).
The sea lags the air by weeks: the warmest water often arrives after the warmest days. Measured buoy values show this honestly.
Water quality
Official EPA rating: excellentMeasurement series & statistics
This measurement series includes 64 data points since September 1, 2026.
Lowest recorded value: 12.9 °C on September 4, 2026 · highest value: 20.0 °C on September 5, 2026.
In September, temperatures have ranged between 12.9 °C and 20.0 °C.
The current value is 3.0 °C above the September average of this series.
Nearby waters
More measuring points: Elkhorn Slough
Frequently asked questions
Can you swim at Elkhorn Slough right now?
The current water temperature is 18.9 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at Elkhorn Slough?
Currently 18.9 °C (updated continuously).
How warm is at Elkhorn Slough in September?
In September, the water temperature recently averaged 15.9 °C.
How is the water quality at Elkhorn Slough?
The official classification is: excellent.
