9075080 - Mackinaw City, MI (MACM4) — Live Marine Conditions & Buoy Data
NOAA station MACM4, 9075080 - Mackinaw City, MI, reports real-time marine conditions from 45.777°N, 84.721°W in Lake Michigan (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 9075080 - Mackinaw City, MI
As of October 19, 2026 at 20:48 UTC, 9075080 - Mackinaw City, MI (MACM4) is reporting water temperature 55°F, air temperature 60°F, wind from the NW at 7 mph gusting 8 mph, and barometric pressure 30.35 inHg.
- Water temperature
- 55°F
- Air temperature
- 60°F
- Wind
- NW 7 mph (gust 8)
- Barometric pressure
- 30.35 inHg
Observed October 19, 2026 at 20:48 UTC from NOAA NDBC station MACM4. Readings update about every 10 minutes.
What NOAA buoy MACM4 measures
As a NOAA meteorological station, MACM4 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 NOAA buoy MACM4?
- Sea surface temperature at NOAA buoy MACM4 was 55°F. Measured October 19, 2026 at 20:48 UTC by NOAA station MACM4 (9075080 - Mackinaw City, MI). NDBC measures this near the surface, at a depth that varies by station.
- What is the air temperature at NOAA buoy MACM4?
- Air temperature at NOAA buoy MACM4 was 60°F. Measured October 19, 2026 at 20:48 UTC by NOAA station MACM4 (9075080 - Mackinaw City, MI).
- What is the wind doing at NOAA buoy MACM4?
- Wind at NOAA buoy MACM4 was from the NW at 7 mph, with peak gusts to 8 mph. Measured October 19, 2026 at 20:48 UTC by NOAA station MACM4 (9075080 - Mackinaw City, MI). NDBC records wind at the station’s anemometer height, which is not the 10 m height used in marine forecasts.
- What is the barometric pressure at NOAA buoy MACM4?
- Sea-level pressure at NOAA buoy MACM4 was 30.35 inHg (1027.7 hPa). Measured October 19, 2026 at 20:48 UTC by NOAA station MACM4 (9075080 - Mackinaw City, MI). NDBC reports pressure reduced to sea level rather than the raw reading at the station.
- Where is NOAA buoy MACM4 located?
- 9075080 - Mackinaw City, MI (MACM4) reports from 45.777°N, 84.721°W in Lake Michigan (Michigan).
- How often is NOAA buoy MACM4 updated?
- Station MACM4 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 MACM4 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for 9075080 - Mackinaw City, MI, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for 9075080 - Mackinaw City, MI 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.