Sleeping Bear Dunes (45183) — Live Marine Conditions & Buoy Data
NOAA station 45183, Sleeping Bear Dunes, reports real-time marine conditions from 44.982°N, 85.831°W in Lake Michigan. Readings refresh roughly every 10 minutes, and Big Buoy adds a solunar table and a multi-day weather outlook for the area.
Current conditions at Sleeping Bear Dunes
As of October 19, 2026 at 18:00 UTC, Sleeping Bear Dunes (45183) is reporting water temperature 57°F, air temperature 57°F, wave height 0.7 ft, wind from the N at 7 mph gusting 7 mph, and barometric pressure 30.46 inHg.
- Water temperature
- 57°F
- Air temperature
- 57°F
- Wave height
- 0.7 ft
- Wind
- N 7 mph (gust 7)
- Barometric pressure
- 30.46 inHg
Observed October 19, 2026 at 18:00 UTC from NOAA NDBC station 45183. Readings update about every 10 minutes.
What NOAA buoy 45183 measures
As a NOAA meteorological station, 45183 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 Lake Michigan
Lake Michigan’s long north-south axis lets a sustained northerly or southerly wind build large, steep seas over its full fetch, sometimes within hours. Summer stratification is sharp and wind-driven upwelling can swing nearshore water temperature 15–20°F in a day, so watch wind direction and buoy temperatures together.
Frequently asked questions
- What is the water temperature at Sleeping Bear Dunes?
- Sea surface temperature at Sleeping Bear Dunes was 57°F. Measured October 19, 2026 at 18:00 UTC by NOAA station 45183 (Sleeping Bear Dunes). NDBC measures this near the surface, at a depth that varies by station.
- What is the air temperature at Sleeping Bear Dunes?
- Air temperature at Sleeping Bear Dunes was 57°F. Measured October 19, 2026 at 18:00 UTC by NOAA station 45183 (Sleeping Bear Dunes).
- What is the wind doing at Sleeping Bear Dunes?
- Wind at Sleeping Bear Dunes was from the N at 7 mph. Measured October 19, 2026 at 18:00 UTC by NOAA station 45183 (Sleeping Bear Dunes). 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 Sleeping Bear Dunes?
- Significant wave height at Sleeping Bear Dunes was 0.7 ft. Measured October 19, 2026 at 18:00 UTC by NOAA station 45183 (Sleeping Bear Dunes). 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 Sleeping Bear Dunes?
- Waves at Sleeping Bear Dunes were arriving from 263° true (W) at the dominant period. Measured October 19, 2026 at 18:00 UTC by NOAA station 45183 (Sleeping Bear Dunes).
- What is the barometric pressure at Sleeping Bear Dunes?
- Sea-level pressure at Sleeping Bear Dunes was 30.46 inHg (1031.6 hPa). Measured October 19, 2026 at 18:00 UTC by NOAA station 45183 (Sleeping Bear Dunes). NDBC reports pressure reduced to sea level rather than the raw reading at the station.
- Where is NOAA buoy 45183 located?
- Sleeping Bear Dunes (45183) reports from 44.982°N, 85.831°W in Lake Michigan.
- How often is NOAA buoy 45183 updated?
- Station 45183 typically reports new observations about every 10 minutes. Big Buoy refreshes continuously so you always see the latest readings, alongside a solunar table for the area.
- What does NOAA buoy 45183 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for Sleeping Bear Dunes, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for Sleeping Bear Dunes 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.