NANTUCKET SOUND (44020) — Live Marine Conditions & Buoy Data
NOAA station 44020, NANTUCKET SOUND, reports real-time marine conditions from 41.497°N, 70.283°W in the western North Atlantic. 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 — NANTUCKET SOUND is one of several stations in Cape Cod. See live tides, buoy data, and solunar for the whole area.
Current conditions at NANTUCKET SOUND
As of October 19, 2026 at 18:40 UTC, NANTUCKET SOUND (44020) is reporting water temperature 60°F, air temperature 56°F, wave height 2.3 ft at a 4-second dominant period, wind from the NE at 18 mph gusting 20 mph, and barometric pressure 30.32 inHg.
- Water temperature
- 60°F
- Air temperature
- 56°F
- Wave height
- 2.3 ft @ 4 s
- Wind
- NE 18 mph (gust 20)
- Barometric pressure
- 30.32 inHg
Observed October 19, 2026 at 18:40 UTC from NOAA NDBC station 44020. Readings update about every 10 minutes.
What NOAA buoy 44020 measures
As a NOAA meteorological station, 44020 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
- What is the water temperature at Nantucket Sound?
- Sea surface temperature at Nantucket Sound was 60°F. Measured October 19, 2026 at 18:40 UTC by NOAA station 44020 (NANTUCKET SOUND). NDBC measures this near the surface, at a depth that varies by station.
- What is the air temperature at Nantucket Sound?
- Air temperature at Nantucket Sound was 56°F. Measured October 19, 2026 at 18:40 UTC by NOAA station 44020 (NANTUCKET SOUND).
- What is the wind doing at Nantucket Sound?
- Wind at Nantucket Sound was from the NE at 18 mph, with peak gusts to 20 mph. Measured October 19, 2026 at 18:40 UTC by NOAA station 44020 (NANTUCKET SOUND). NDBC records wind at the station’s anemometer height, which is not the 10 m height used in marine forecasts.
- How big are the waves at Nantucket Sound?
- Significant wave height at Nantucket Sound was 2.3 ft, with a 4-second dominant period. Measured October 19, 2026 at 18:40 UTC by NOAA station 44020 (NANTUCKET SOUND). 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 Nantucket Sound?
- Waves at Nantucket Sound were arriving from 75° true (ENE) at the dominant period. Measured October 19, 2026 at 18:40 UTC by NOAA station 44020 (NANTUCKET SOUND).
- What is the barometric pressure at Nantucket Sound?
- Sea-level pressure at Nantucket Sound was 30.32 inHg (1026.7 hPa). Measured October 19, 2026 at 18:40 UTC by NOAA station 44020 (NANTUCKET SOUND). NDBC reports pressure reduced to sea level rather than the raw reading at the station.
- How much wind chop is at Nantucket Sound?
- The wind-wave component at Nantucket Sound had a significant height of 2.3 ft at a 4-second peak period, from the ENE. Measured October 19, 2026 at 18:40 UTC by NOAA station 44020 (NANTUCKET SOUND). Swell and wind-wave heights combine in quadrature, not by addition.
- Where is NOAA buoy 44020 located?
- NANTUCKET SOUND (44020) reports from 41.497°N, 70.283°W in the western North Atlantic.
- How often is NOAA buoy 44020 updated?
- Station 44020 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 44020 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for NANTUCKET SOUND, plus 7-day tides, solunar peak windows, and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for NANTUCKET SOUND 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.