Marine forecast
South Haven to Holland, MI
- current wind
- 8 kt SSW
- Gusts
- 8 kt
- Seas
- 1.6 ft
- Period
- 4 sec
- Air
- 65°F
Observed Tue 3:20 PM | LMZ845
- Gusts now
- 8 kt
- Seas now
- 1.6 ft · 4 sec
- Air
- 65°F
- 72-hr peak
- 35 kt
- Peak seas
- 13 ft
In brief
At 3:20 pm EDT on Oct 13, 2026, NDBC station SVNM4 (South Haven Light, South Haven, MI, 13 miles away) measured wind from the SSW at 8 kt; buoy 45168 measured seas of 1.6 ft. The NWS forecast for South Haven to Holland, MI issued at 2:11 pm EDT on Oct 13, 2026 reads, for through early evening: “West winds 10 to 15 knots. Sunny.”
Source: National Weather Service Grand Rapids MI forecast; NDBC observations
Wind forecast · ktPeak 35 kt
Seas forecast · ftPeak 13 ft
NWS marine forecast
| Period | Forecast |
|---|---|
| Through Early Evening | West winds 10 to 15 knots. Sunny. Waves 3 to 5 feet. |
| Tonight | Northwest winds 5 to 10 knots veering northeast in the late evening and overnight. Partly cloudy. A slight chance of rain showers in the evening, then a chance of rain showers and a slight chance of thunderstorms after midnight. Waves 1 to 3 feet. |
| Wednesday | Northeast winds 5 to 15 knots backing north 10 to 20 knots early in the afternoon. Partly sunny. Waves 1 to 2 feet. |
| Wednesday Night | North winds 15 to 20 knots veering northeast after midnight. Partly cloudy. Waves 2 to 4 feet. |
| Thursday | East winds 10 to 20 knots. Mostly cloudy with rain showers likely. Waves around 1 foot. |
| Thursday Night | East winds around 10 knots backing north in the late evening and early morning, then becoming northwest gales to 35 knots after midnight. Rain showers likely. Waves 1 to 2 feet building to 5 to 7 feet after midnight. |
| Friday | Northwest gales to 45 knots. Partly sunny with a chance of rain showers. Waves 13 to 17 feet building to 15 to 19 feet early in the afternoon. |
| Saturday | North winds 10 to 15 knots backing west early in the afternoon. Sunny. Waves 6 to 8 feet subsiding to 3 to 5 feet early in the afternoon. |
| Sunday | Southwest winds to 30 knots. Sunny. Waves 5 to 7 feet. |
Issued Tue 2:11 PM by Grand Rapids MI (product NSHGRR).
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 3:20 PM | 8 kt SSW | 8 kt | — | — |
| Tue 2:50 PM | 8 kt S | 8 kt | — | — |
| Tue 1:50 PM | 5 kt S | 6 kt | — | — |
| Tue 12:50 PM | 13 kt S | 14 kt | — | — |
| Tue 11:50 AM | 12 kt S | 12 kt | — | — |
| Tue 10:50 AM | 13 kt S | 14 kt | — | — |
| Tue 9:50 AM | 16 kt S | 18 kt | — | — |
| Tue 8:50 AM | 16 kt S | 17 kt | — | — |
| Tue 7:50 AM | 16 kt S | 18 kt | — | — |
| Tue 6:50 AM | 16 kt S | 18 kt | — | — |
| Tue 5:50 AM | 17 kt S | 19 kt | — | — |
| Tue 4:50 AM | 18 kt S | 20 kt | — | — |
Observed Tue 3:20 PM at NDBC buoy SVNM4 (South Haven Light, South Haven, MI), 13.0 miles away. Seas from buoy 45168 (South Haven Buoy, MI), 13.6 miles away, at Tue 3:00 PM.
Frequently asked questions
What is the marine forecast for South Haven to Holland today?
Through Early Evening: West winds 10 to 15 knots. Sunny. Waves 3 to 5 feet.
Is there a small craft advisory for South Haven to Holland?
No advisories, warnings or watches are in effect for NWS zone LMZ845 as of the last update on this page. Advisories can be issued at any time; check the current bulletin before leaving the dock.
How high are the waves at South Haven to Holland right now?
Seas are running 1.6 ft at a 4-second period, measured at NDBC buoy SVNM4 Tue 3:20 PM, 13.0 miles from this zone. The forecast peaks at 13.0 ft Fri 12 PM.
What do the wind speeds in knots mean?
One knot is 1.15 mph. The National Weather Service issues a small craft advisory for sustained winds of roughly 22–33 knots or hazardous seas, a gale warning at 34–47 knots, and a storm warning at 48 knots and above. Exact advisory thresholds vary by forecast office and by water body — a bay reaches dangerous chop at a lower wind speed than open ocean.
Where does this forecast come from?
The forecast text is the National Weather Service's own marine bulletin for zone LMZ845, issued by Grand Rapids MI, reproduced in full. The wind and seas charts are drawn from the NWS gridded forecast for a point inside the zone. Observations come from the nearest reporting NDBC buoy. We are not affiliated with NOAA or the National Weather Service.
Forecast: NOAA/NWS product NSHGRR, issued Tue 2:11 PM. Observations: NOAA National Data Buoy Center station SVNM4, read Tue 3:20 PM. Retrieved Oct 13, 3:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.