San Francisco Bay A Ne Shore Alcatraz Island, California · Sea/Coast
The current water temperature at San Francisco Bay A Ne Shore Alcatraz Island is 17.2 °C (as of July 17, 2026, source: USGS).
Can you swim at San Francisco Bay A Ne Shore Alcatraz Island right now?
The current water temperature is 17.2 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at San Francisco Bay A Ne Shore Alcatraz Island?
Currently 17.2 °C (updated continuously).
How warm is at San Francisco Bay A Ne Shore Alcatraz Island in July?
In July, the water temperature recently averaged 16.8 °C.