What makes San Mateo's beaches stand out?
San Mateo sits in California, USA and is home to 1 ranked beach on OnlyBeaches. Every beach here is scored by the OnlyBeaches Index — a 1-10 metric blending water purity, live conditions (waves, water temperature, wind), crowd intelligence and vibe.
Whether you're after the highest-scoring beach in San Mateo or a quieter hidden cove, the list above is refreshed every 30 minutes using live Stormglass and OpenWeather data.