Isle of Shoals, NH (IOSN3) — Live Marine Conditions & Buoy Data
NOAA station IOSN3, Isle of Shoals, NH, reports real-time marine conditions from 42.967°N, 70.623°W in the western North Atlantic (New Hampshire). 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.
Cape Cod Marine Conditions — Isle of Shoals, NH is one of several stations in Cape Cod. See live tides, buoy data, and solunar for the whole area.
What NOAA buoy IOSN3 measures
Station IOSN3 does not report a full meteorological suite; Big Buoy shows the observations available at this location and pairs it with the nearest offshore buoy and a 7-day tide forecast so you still get a complete picture of the area.
What to watch in the western North Atlantic
Conditions along the Atlantic coast are driven by swell direction and the shifting western edge of the Gulf Stream. Northeast winds against an outgoing tide stack up steep, dangerous seas at inlets, and water temperature can change 10–20°F over just a few miles as the Gulf Stream boundary moves.
Frequently asked questions
- Where is NOAA buoy IOSN3 located?
- Isle of Shoals, NH (IOSN3) reports from 42.967°N, 70.623°W in the western North Atlantic (New Hampshire).
- How often is NOAA buoy IOSN3 updated?
- Station IOSN3 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 IOSN3 measure?
- Big Buoy shows the observations available at this location, plus tides and the nearest offshore buoy for Isle of Shoals, NH, plus 7-day tides, solunar peak windows, and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Isle of Shoals, NH 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.