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San Mateo County, California · Ocean

Can you swim at San Gregorio State Beach today?

7.6GOODPARTIAL

Good · 7.6

Water is 65 °F, measured at NDBC buoy 46012 (HALF MOON BAY - 24NM SSW of San Francisco, CA) (46012). Rough waves around 3.6 ft.

Updated

Swim brief

Conditions look good right now: 7.6 out of 10. Water is 65 °F, measured at NDBC buoy 46012 (HALF MOON BAY - 24NM SSW of San Francisco, CA) (46012). Rough waves around 3.6 ft.

Written from the readings below. Not a safety guarantee: follow lifeguards and posted signs.

The readings

  • Water temperature
    65 °F
    NDBC buoy 46012 (HALF MOON BAY - 24NM SSW of San Francisco, CA) (46012) (measured) · fetched
    Good
  • Water quality
    No reading
    Advisories are published by the state beach program (see below)
    –
  • Waves
    3.6 ft
    NOAA NDBC Buoy 46012 · fetched
    Good
  • Wind
    No reading
    Weather refresh deferred to preserve capacity for later today
    –
  • Air temperature
    No reading
    Weather refresh deferred to preserve capacity for later today
    –
  • UV index
    No reading
    No UV source configured or reachable
    –
  • Thunderstorms
    No reading
    Weather refresh deferred to preserve capacity for later today
    –
  • Weather alerts
    No reading
    Weather provider does not report alerts
    –

Today

No hourly forecast yet

Hourly forecasts are stored for priority spots first; this one has not been fetched yet.

Questions about San Gregorio State Beach

Is it safe to swim at San Gregorio State Beach today?

Swimmable can't tell you a spot is safe; conditions change fast and no score is a guarantee. Right now its Swim Score is 7.6 out of 10 (Good), summarised from public weather, marine and water data. Check whether lifeguards are on duty and follow posted signs and flags.

What is the water temperature at San Gregorio State Beach?

The latest reading is 65 °F. The page shows its source and when it was fetched.

Is the water clean at San Gregorio State Beach?

This beach is monitored under the U.S. BEACH Act. Advisories and closures are published by the state or local program listed in EPA BEACON; check it before you swim.

How is the Swim Score calculated?

The score out of 10 combines water temperature, air temperature, UV, wind and weather, waves and weather alerts from public sources such as NOAA, NDBC and Open-Meteo. Missing readings are left out and shown as missing, never guessed.