San Mateo C below Lo Crystal Sp Reservoir near San Mateo, California · River
The current water temperature at San Mateo C below Lo Crystal Sp Reservoir near San Mateo is 16.5 °C (as of July 17, 2026, source: USGS).
Can you swim at San Mateo C below Lo Crystal Sp Reservoir near San Mateo right now?
The current water temperature is 16.5 °C. See live swimming conditions, weather and quality in the BrrChecker app.
How warm is the water at San Mateo C below Lo Crystal Sp Reservoir near San Mateo?
Currently 16.5 °C (updated continuously).
How warm is at San Mateo C below Lo Crystal Sp Reservoir near San Mateo in July?
In July, the water temperature recently averaged 16.0 °C.