Green Beach Offshore, CA (271) (46277) — Live Marine Conditions & Buoy Data
NOAA station 46277, Green Beach Offshore, CA (271), reports real-time marine conditions from 33.336°N, 117.659°W in the eastern North Pacific (California). Readings refresh roughly every 10 minutes, and Big Buoy adds 7-day tide predictions, a solunar table, and a multi-day weather outlook for the area.
Southern California Marine Conditions — Green Beach Offshore, CA (271) is one of several stations in Southern California. See live tides, buoy data, and solunar for the whole area.
Current conditions at Green Beach Offshore, CA (271)
As of October 19, 2026 at 21:00 UTC, Green Beach Offshore, CA (271) (46277) is reporting water temperature 74°F, air temperature 72°F, and wave height 4.9 ft at a 17-second dominant period.
- Water temperature
- 74°F
- Air temperature
- 72°F
- Wave height
- 4.9 ft @ 17 s
Observed October 19, 2026 at 21:00 UTC from NOAA NDBC station 46277. Readings update about every 10 minutes.
What NOAA buoy 46277 measures
As a NOAA meteorological station, 46277 reports wind speed, gusts and direction, barometric pressure, air and water temperature, and — where wave sensors are fitted — significant wave height, swell period, and wave direction.
What to watch in the eastern North Pacific
The U.S. Pacific coast is dominated by long-period groundswell and strong seasonal upwelling that keeps nearshore water cold. Watch swell period as closely as wave height — a long-period west swell can make harbor entrances and bar crossings hazardous even when the wave height looks modest.
Frequently asked questions
- What is the water temperature at Green Beach Offshore?
- Sea surface temperature at Green Beach Offshore was 74°F. Measured October 19, 2026 at 21:00 UTC by NOAA station 46277 (Green Beach Offshore, CA (271)). NDBC measures this near the surface, at a depth that varies by station.
- What is the air temperature at Green Beach Offshore?
- Air temperature at Green Beach Offshore was 72°F. Measured October 19, 2026 at 21:00 UTC by NOAA station 46277 (Green Beach Offshore, CA (271)).
- How big are the waves at Green Beach Offshore?
- Significant wave height at Green Beach Offshore was 4.9 ft, with a 17-second dominant period. Measured October 19, 2026 at 21:00 UTC by NOAA station 46277 (Green Beach Offshore, CA (271)). Significant wave height is the average of the highest one-third of waves — individual waves can be larger.
- Which direction are the waves coming from at Green Beach Offshore?
- Waves at Green Beach Offshore were arriving from 194° true (SSW) at the dominant period. Measured October 19, 2026 at 21:00 UTC by NOAA station 46277 (Green Beach Offshore, CA (271)).
- What is the swell at Green Beach Offshore?
- The swell at Green Beach Offshore had a significant height of 4.6 ft at a 17-second peak period, arriving from the SSW. Measured October 19, 2026 at 21:00 UTC by NOAA station 46277 (Green Beach Offshore, CA (271)). NDBC separates swell from locally generated wind waves using a spectral estimate.
- How much wind chop is at Green Beach Offshore?
- The wind-wave component at Green Beach Offshore had a significant height of 2.0 ft at a 7-second peak period, from the WSW. Measured October 19, 2026 at 21:00 UTC by NOAA station 46277 (Green Beach Offshore, CA (271)). Swell and wind-wave heights combine in quadrature, not by addition.
- Is it swell or wind chop at Green Beach Offshore?
- NDBC classified the sea state at Green Beach Offshore as swell, with a significant wave height of 4.9 ft. Measured October 19, 2026 at 21:00 UTC by NOAA station 46277 (Green Beach Offshore, CA (271)). The classification describes wave steepness relative to period, not wave size.
- Where is NOAA buoy 46277 located?
- Green Beach Offshore, CA (271) (46277) reports from 33.336°N, 117.659°W in the eastern North Pacific (California).
- How often is NOAA buoy 46277 updated?
- Station 46277 typically reports new observations about every 10 minutes. Big Buoy refreshes continuously so you always see the latest readings, alongside 7-day tide predictions and a solunar table for the area.
- What does NOAA buoy 46277 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Green Beach Offshore, CA (271), plus 7-day tides, solunar peak windows, and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Green Beach Offshore, CA (271) and every other NOAA buoy is free with no account required. Big Buoy Pro adds the Wind Tab, the Depth Chart, satellite overlays (sea surface temp, chlorophyll, currents), 16-day forecasts, and forecast model switching.