Marine buoy
Pearl Harbor Entrance, HI (233) 51211
Pearl Harbor Entrance, HI (233) is a wave buoy in United States integrated into SwellOracle from NOAA/NDBC. This page summarizes its position, source and available variables for checking surf conditions: 3.6 ft, 13 s, SSE.
Technical details for Pearl Harbor Entrance, HI (233)
Use these details to verify the station identity, location, source and timestamp before comparing its values with another buoy or model.
- Station name
- Pearl Harbor Entrance, HI (233)
- Station identifier
- 51211
- Country or area
- United States
- Coordinates
- 21° 17' 49.2" N, 157° 57' 32.4" O
- Source and provider
- NOAA/NDBC
- Source type
- Wave buoy
- Data license
- noaa.gov/disclaimer
- Latest source observation
- 2026-08-24T18:00:00 UTC · Updated recently
- Published data fields
- Wave height, Dominant wave period, Average wave period, Wave direction, Water temperature
How to use this buoy or model
Pearl Harbor Entrance, HI (233) is part of SwellOracle's United States surf and swell coverage. This page preserves the source identity and timestamp so you can judge whether the reading is useful for your coastline. Because this is an observation or reference station, gaps and delays can occur when the upstream feed is unavailable.
- Start with the observation time; stale data should not be treated as current surf.
- Read height together with period and direction; one number alone does not describe wave quality.
- Compare this page with nearby locations only when their source and update time are clear. Source: NOAA/NDBC.
How to use this reading
Pearl Harbor Entrance, HI (233) helps confirm whether swell energy is reaching the United States area. Higher height with a longer period usually means more organized energy, while direction determines which coastlines receive that swell best.
For surf decisions, compare height, period and direction with your beach's local exposure. If the station does not report a variable, use the app to compare it with nearby model points.
Observation history not available yet
This station is listed as a physical reference, but it is not part of the current history capture set. SwellOracle only shows charts after enough reusable observations have been stored.
Regional coverage
Frequently asked questions about this station
What is Pearl Harbor Entrance, HI (233)?
Pearl Harbor Entrance, HI (233) is a physical or reference marine station for United States, identified as 51211 and published in SwellOracle with source attribution.
Where does the data for Pearl Harbor Entrance, HI (233) come from?
The source shown for this page is NOAA/NDBC. SwellOracle preserves the station identifier and distinguishes measured observations from model estimates.
Does Pearl Harbor Entrance, HI (233) have a current reading?
A source observation is available and its timestamp is displayed on this page. Always check that time before using the values because marine feeds update on different schedules.
Why does Pearl Harbor Entrance, HI (233) have or not have a history chart?
This station is not yet in the history capture set. SwellOracle does not create a chart until a reusable, correctly identified series exists.
See a problem with this data?
Report a source, location, label or reading that appears inaccurate. Include the station ID and observation time so we can verify it.