Coastal Marine Lab, New Castle, NH (CMLN3) — Live Marine Conditions & Buoy Data
NOAA station CMLN3, Coastal Marine Lab, New Castle, NH, reports real-time marine conditions from 43.070°N, 70.700°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 — Coastal Marine Lab, New Castle, NH is one of several stations in Cape Cod. See live tides, buoy data, and solunar for the whole area.
Current conditions at Coastal Marine Lab, New Castle, NH
As of August 21, 2026 at 18:00 UTC, Coastal Marine Lab, New Castle, NH (CMLN3) is reporting air temperature 73°F and wind from the NNE at 15 mph.
- Air temperature
- 73°F
- Wind
- NNE 15 mph
Observed August 21, 2026 at 18:00 UTC from NOAA NDBC station CMLN3. Readings update about every 10 minutes.
What NOAA buoy CMLN3 measures
As a NOAA meteorological station, CMLN3 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 CMLN3 located?
- Coastal Marine Lab, New Castle, NH (CMLN3) reports from 43.070°N, 70.700°W in the western North Atlantic (New Hampshire).
- How often is NOAA buoy CMLN3 updated?
- Station CMLN3 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 CMLN3 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Coastal Marine Lab, New Castle, NH, plus 7-day tides, solunar peak windows, and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Coastal Marine Lab, New Castle, 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.