8419870 - Seavey Island, ME (SEIM1) — Live Marine Conditions & Buoy Data
NOAA station SEIM1, 8419870 - Seavey Island, ME, reports real-time marine conditions from 43.080°N, 70.742°W in the western North Atlantic (Maine). 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 — 8419870 - Seavey Island, ME is one of several stations in Cape Cod. See live tides, buoy data, and solunar for the whole area.
Current conditions at 8419870 - Seavey Island, ME
As of August 21, 2026 at 19:30 UTC, 8419870 - Seavey Island, ME (SEIM1) is reporting water temperature 66°F, air temperature 74°F, and barometric pressure 30.11 inHg.
- Water temperature
- 66°F
- Air temperature
- 74°F
- Barometric pressure
- 30.11 inHg
Observed August 21, 2026 at 19:30 UTC from NOAA NDBC station SEIM1. Readings update about every 10 minutes.
What NOAA buoy SEIM1 measures
As a NOAA meteorological station, SEIM1 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 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 SEIM1 located?
- 8419870 - Seavey Island, ME (SEIM1) reports from 43.080°N, 70.742°W in the western North Atlantic (Maine).
- How often is NOAA buoy SEIM1 updated?
- Station SEIM1 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 SEIM1 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for 8419870 - Seavey Island, ME, plus 7-day tides, solunar peak windows, and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for 8419870 - Seavey Island, ME 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.