Mission Bay West, CA (220) (46258) — Live Marine Conditions & Buoy Data
NOAA station 46258, Mission Bay West, CA (220), reports real-time marine conditions from 32.749°N, 117.502°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 — Mission Bay West, CA (220) is one of several stations in Southern California. See live tides, buoy data, and solunar for the whole area.
Current conditions at Mission Bay West, CA (220)
As of October 19, 2026 at 19:26 UTC, Mission Bay West, CA (220) (46258) is reporting water temperature 74°F and wave height 5.2 ft at a 14-second dominant period.
- Water temperature
- 74°F
- Wave height
- 5.2 ft @ 14 s
Observed October 19, 2026 at 19:26 UTC from NOAA NDBC station 46258. Readings update about every 10 minutes.
What NOAA buoy 46258 measures
As a NOAA meteorological station, 46258 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 Mission Bay West?
- Sea surface temperature at Mission Bay West was 74°F. Measured October 19, 2026 at 19:26 UTC by NOAA station 46258 (Mission Bay West, CA (220)). NDBC measures this near the surface, at a depth that varies by station.
- How big are the waves at Mission Bay West?
- Significant wave height at Mission Bay West was 5.2 ft, with a 14-second dominant period. Measured October 19, 2026 at 19:26 UTC by NOAA station 46258 (Mission Bay West, CA (220)). 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 Mission Bay West?
- Waves at Mission Bay West were arriving from 192° true (SSW) at the dominant period. Measured October 19, 2026 at 19:26 UTC by NOAA station 46258 (Mission Bay West, CA (220)).
- What is the swell at Mission Bay West?
- The swell at Mission Bay West had a significant height of 5.2 ft at a 14-second peak period, arriving from the SSW. Measured October 19, 2026 at 19:26 UTC by NOAA station 46258 (Mission Bay West, CA (220)). NDBC separates swell from locally generated wind waves using a spectral estimate.
- How much wind chop is at Mission Bay West?
- The wind-wave component at Mission Bay West had a significant height of 1.3 ft at a 10-second peak period, from the WSW. Measured October 19, 2026 at 19:26 UTC by NOAA station 46258 (Mission Bay West, CA (220)). Swell and wind-wave heights combine in quadrature, not by addition.
- Is it swell or wind chop at Mission Bay West?
- NDBC classified the sea state at Mission Bay West as swell, with a significant wave height of 5.2 ft. Measured October 19, 2026 at 19:26 UTC by NOAA station 46258 (Mission Bay West, CA (220)). The classification describes wave steepness relative to period, not wave size.
- Where is NOAA buoy 46258 located?
- Mission Bay West, CA (220) (46258) reports from 32.749°N, 117.502°W in the eastern North Pacific (California).
- How often is NOAA buoy 46258 updated?
- Station 46258 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 46258 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Mission Bay West, CA (220), plus 7-day tides, solunar peak windows, and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Mission Bay West, CA (220) 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.