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Real-Time Meteorological Observation Network
South Haven, MI  (SVNM4)  42° 24´ 05" N,   86° 17´ 20" W

See Metadata File for full description of instruments and parameters, as well as site maps. See also rtmon status, webcam status
Conditions at 8:44 am EST on 12/10/2025 (DOY 344 13:44 GMT)
(Updated every 15 minutes)
Wind Speed:   19.6 kts   (10.1 m/s)
Max Wind Speed:   23.3 kts   (12.0 m/s)
Wind Direction:   252° (WSW)
Air Temperature:   38.8 °F   (3.8 °C)
Wind Chill:   28.4 °F   (-2.0 °C)
Data & Plots of Previous 3 Hours (2 minute increments)
Data & Plots of Previous 5 Days (hourly increments)
         1 Day Windrose Plot, 5 Day Windrose Plot, (explanation)         
Click on image to enlarge
(images updated every 30 minutes)

[Live Webcam Image from South Haven, MI Met Station Camera 1]

[Live Webcam Image from South Haven, MI Met Station Camera 2]

[Live Webcam Image from South Haven, MI Met Station Camera 3]

[Live Webcam Image from South Haven, MI Met Station Camera 4]

12-hr animations:  1  2  3  4
Previous 48 images:  1  2  3  4
All Images (past 10 days)

Nearby Webcam (external site):
South Haven Lighthouse

----- Previous 18 Hours (at top of hour)  [English] [Metric] -----
YEARDOY EST Wind
Spd
kts 		Wind
Gust
kts 		Peak
Wind
kts 		Wind
Dir
deg 		Air
Tmp
F 		Wind
Chill
F
20253440800 23.5 27.0 27.0 251 39.4 28.2
20253440700 20.0 22.4 28.2 250 40.6 -99.0
20253440600 18.9 21.4 26.2 247 41.2 -99.0
20253440500 23.9 28.6 28.8 225 41.4 -99.0
20253440400 28.6 34.4 35.0 200 41.9 -99.0
20253440300 29.0 34.2 34.2 186 41.2 -99.0
20253440200 19.8 21.6 34.0 159 38.5 27.8
20253440100 16.5 19.2 25.1 153 37.8 27.8
20253440000 14.6 17.5 24.7 139 37.0 27.5
20253432300 12.6 15.2 20.2 122 36.0 26.8
20253432200 10.3 12.4 19.6 130 36.0 27.8
20253432100 14.2 16.9 17.3 151 35.4 25.5
20253432000 11.1 12.4 16.7 144 34.9 26.1
20253431900 19.4 21.6 22.9 166 37.2 26.3
20253431800 19.1 21.8 24.1 185 38.5 28.0
20253431700 19.4 21.8 23.9 210 38.7 28.2
20253431600 19.1 22.0 23.9 224 37.2 26.4
20253431500 22.9 24.7 26.4 216 36.9 24.9
Note: Peak wind is max wind gust during entire hour
Note: Wind chill is set to -99 if air temp > 40 F or wind speed < 3 mph

      right arrow Click here for recent 2-minute daily data: 20251210.08t.txt.txt, data format (metadata)
      right arrow Click here for past data: 2025 | Archive

The NDBC station ID for this station is: SVNM4
Access current marine observations on your mobile device. See NDBC's mobile access page.
These data are also available from NDBC website and NDBC's Dial-a-Buoy Program.
See also NWS Marine Forecast for this area, and NWS Recreational Beach Forecast

Realtime Data Disclaimer
Special thanks to Special thanks to ATON CG Group Muskegon, 9th USCG Group, State of Michigan
Historic Preservation Office, and the Michigan Maritime Museum in South Haven.


Additional Great Lakes Meteorological Observations

» NWS, Grand Rapids Office: Near-Realtime Marine Weather, includes current conditions and forecasts
» NWS, White Lake Office: Near-Realtime Marine Weather, includes current conditions and forecasts
» NDBC Great Lakes ImageMap showing U.S. and Canadian Buoys and C-MAN Stations
» NOAA CoastWatch Great Lakes NOAAPORT Data, includes all station types
» NOAA's NowCoast: Web mapping portal to real-time coastal observations
» Winds courtesy of iWindsurf.com
» NWS Great Lakes Marine Text Forecasts by Zone
» Links to Great Lakes Water Temperature, Wind/Wave Data, & Water Levels
» GLIN: Great Lakes Information Network

Contact:
General Information & Media Inquiries:
oar.glerl.www@noaa.gov
(734) 741-2235 		Data Inquiries:
oar.glerl.data@noaa.gov