9087031 - Holland, MI (HLNM4) — Live Marine Conditions & Buoy Data
NOAA station HLNM4, 9087031 - Holland, MI, reports real-time marine conditions from 42.773°N, 86.213°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.
Lake Michigan Marine Conditions — 9087031 - Holland, MI is one of several stations in Lake Michigan. See live buoy data and solunar for the whole area.
Current conditions at 9087031 - Holland, MI
As of October 19, 2026 at 20:18 UTC, 9087031 - Holland, MI (HLNM4) is reporting water temperature 51°F, air temperature 57°F, wind from the W at 6 mph gusting 7 mph, and barometric pressure 30.38 inHg.
- Water temperature
- 51°F
- Air temperature
- 57°F
- Wind
- W 6 mph (gust 7)
- Barometric pressure
- 30.38 inHg
Observed October 19, 2026 at 20:18 UTC from NOAA NDBC station HLNM4. Readings update about every 10 minutes.
What NOAA buoy HLNM4 measures
As a NOAA meteorological station, HLNM4 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 HLNM4?
- Sea surface temperature at NOAA buoy HLNM4 was 51°F. Measured October 19, 2026 at 20:18 UTC by NOAA station HLNM4 (9087031 - Holland, MI). NDBC measures this near the surface, at a depth that varies by station.
- What is the air temperature at NOAA buoy HLNM4?
- Air temperature at NOAA buoy HLNM4 was 57°F. Measured October 19, 2026 at 20:18 UTC by NOAA station HLNM4 (9087031 - Holland, MI).
- What is the wind doing at NOAA buoy HLNM4?
- Wind at NOAA buoy HLNM4 was from the W at 6 mph, with peak gusts to 7 mph. Measured October 19, 2026 at 20:18 UTC by NOAA station HLNM4 (9087031 - Holland, 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 HLNM4?
- Sea-level pressure at NOAA buoy HLNM4 was 30.38 inHg (1028.7 hPa). Measured October 19, 2026 at 20:18 UTC by NOAA station HLNM4 (9087031 - Holland, MI). NDBC reports pressure reduced to sea level rather than the raw reading at the station.
- Where is NOAA buoy HLNM4 located?
- 9087031 - Holland, MI (HLNM4) reports from 42.773°N, 86.213°W in Lake Michigan (Michigan).
- How often is NOAA buoy HLNM4 updated?
- Station HLNM4 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 HLNM4 measure?
- Big Buoy shows wind, barometric pressure, air and water temperature, and wave height and period where available for 9087031 - Holland, MI, plus solunar peak windows and a multi-day weather outlook.
- Is Big Buoy free to use?
- Yes. Live data for 9087031 - Holland, 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.