Cape Cod Bay, MA (221) (44090) — Live Marine Conditions & Buoy Data
NOAA station 44090, Cape Cod Bay, MA (221), reports real-time marine conditions from 41.840°N, 70.329°W in the western North Atlantic (Massachusetts). 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 — Cape Cod Bay, MA (221) is one of several stations in Cape Cod. See live tides, buoy data, and solunar for the whole area.
Current conditions at Cape Cod Bay, MA (221)
As of October 19, 2026 at 19:30 UTC, Cape Cod Bay, MA (221) (44090) is reporting water temperature 59°F, air temperature 55°F, and wave height 1.3 ft at a 3-second dominant period.
- Water temperature
- 59°F
- Air temperature
- 55°F
- Wave height
- 1.3 ft @ 3 s
Observed October 19, 2026 at 19:30 UTC from NOAA NDBC station 44090. Readings update about every 10 minutes.
What NOAA buoy 44090 measures
As a NOAA meteorological station, 44090 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 Cape Cod Bay?
- Sea surface temperature at Cape Cod Bay was 59°F. Measured October 19, 2026 at 19:30 UTC by NOAA station 44090 (Cape Cod Bay, MA (221)). NDBC measures this near the surface, at a depth that varies by station.
- What is the air temperature at Cape Cod Bay?
- Air temperature at Cape Cod Bay was 55°F. Measured October 19, 2026 at 19:30 UTC by NOAA station 44090 (Cape Cod Bay, MA (221)).
- How big are the waves at Cape Cod Bay?
- Significant wave height at Cape Cod Bay was 1.3 ft, with a 3-second dominant period. Measured October 19, 2026 at 19:30 UTC by NOAA station 44090 (Cape Cod Bay, MA (221)). 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 Cape Cod Bay?
- Waves at Cape Cod Bay were arriving from 72° true (ENE) at the dominant period. Measured October 19, 2026 at 19:30 UTC by NOAA station 44090 (Cape Cod Bay, MA (221)).
- How much wind chop is at Cape Cod Bay?
- The wind-wave component at Cape Cod Bay had a significant height of 1.3 ft at a 3-second peak period, from the ENE. Measured October 19, 2026 at 19:30 UTC by NOAA station 44090 (Cape Cod Bay, MA (221)). Swell and wind-wave heights combine in quadrature, not by addition.
- Where is NOAA buoy 44090 located?
- Cape Cod Bay, MA (221) (44090) reports from 41.840°N, 70.329°W in the western North Atlantic (Massachusetts).
- How often is NOAA buoy 44090 updated?
- Station 44090 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 44090 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Cape Cod Bay, MA (221), plus 7-day tides, solunar peak windows, and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Cape Cod Bay, MA (221) 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.