Marine forecast
Port Sanilac to Port Huron, MI
- current wind
- 12 kt W
- Gusts
- 16 kt
- Seas
- 1.3 ft
- Period
- 3 sec
- Air
- 76°F
Observed Tue 3:10 PM | LHZ443
- Gusts now
- 16 kt
- Seas now
- 1.3 ft · 3 sec
- Air
- 76°F
- Water
- 62°F
- 72-hr peak
- 27 kt
In brief
At 3:10 pm EDT on Oct 13, 2026, NDBC station 45209 (Lakeport Buoy, MI, 10 miles away) measured wind from the W at 12 kt, gusting to 16 kt, with seas of 1.3 ft. The NWS forecast for Port Sanilac to Port Huron, MI issued at 9:53 am EDT on Oct 13, 2026 reads, for rest of today: “Southwest winds 15 to 20 knots. Sunny.” A Small Craft Advisory is in effect until Tue 8:00 PM.
Source: National Weather Service Detroit/Pontiac MI forecast; NDBC observations
Wind forecast · ktPeak 27 kt
Seas forecast · ftPeak 4 ft
Marine advisory
Small Craft Advisory in effect for Port Sanilac to Port Huron until Tue 8:00 PM.
Full text of this small craft advisory
* WHAT...Expect sustained winds up to 18 knots from the west with gusts up to 25 knots. The largest significant waves will be 3 feet with a potential maximum wave height of 4 feet. * WHERE...Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay, Inner Saginaw Bay SW of Point Au Gres to Bay Port MI, Port Austin to Harbor Beach MI, Harbor Beach to Port Sanilac MI and Port Sanilac to Port Huron MI. * WHEN...The maximum winds are expected around 12 PM EDT Tuesday with the largest waves expected around 4 PM EDT Tuesday. * IMPACTS...Conditions will be hazardous to small craft.
NWS marine forecast
| Period | Forecast |
|---|---|
| Rest Of Today | Southwest winds 15 to 20 knots. Sunny. Waves 1 to 3 feet. |
| Tonight | Northwest winds 15 to 20 knots diminishing to 5 to 10 knots. Partly cloudy. A slight chance of light rain after midnight. Waves 2 feet or less. |
| Wednesday | Northwest winds 5 to 10 knots becoming north 10 to 15 knots in the late morning and afternoon. Mostly cloudy early in the morning becoming partly cloudy. A chance of light rain early in the morning. Waves 1 to 3 feet. |
| Wednesday Night | North winds 15 to 20 knots. Partly cloudy early in the evening becoming mostly cloudy. Waves 2 to 4 feet. See Lake Huron Open Lake Forecast for days 3 through 5. |
Issued Tue 9:53 AM by Detroit/Pontiac MI (product NSHDTX).
Recent buoy conditions
| Time | Wind | Gust | Seas | Water |
|---|---|---|---|---|
| Tue 3:10 PM | 12 kt W | 16 kt | 1.3 ft | 62°F |
| Tue 2:50 PM | 10 kt W | 14 kt | 1.6 ft | 62°F |
| Tue 1:50 PM | 10 kt W | 14 kt | 1.3 ft | 62°F |
| Tue 12:50 PM | 8 kt WSW | 12 kt | 1.3 ft | 62°F |
| Tue 11:50 AM | 10 kt W | 14 kt | 1.6 ft | 62°F |
| Tue 10:50 AM | 14 kt W | 19 kt | 1.6 ft | 61°F |
| Tue 9:50 AM | 12 kt W | 14 kt | 1.6 ft | 61°F |
| Tue 8:50 AM | 12 kt WSW | 16 kt | 1.3 ft | 61°F |
| Tue 7:50 AM | 12 kt WSW | 14 kt | 1.3 ft | 61°F |
| Tue 6:50 AM | 10 kt SW | 12 kt | 1.0 ft | 61°F |
| Tue 5:50 AM | 10 kt SW | 12 kt | 1.0 ft | 61°F |
| Tue 4:50 AM | 8 kt SSW | 10 kt | 1.0 ft | 61°F |
Observed Tue 3:10 PM at NDBC buoy 45209 (Lakeport Buoy, MI), 10.0 miles away.
Frequently asked questions
What is the marine forecast for Port Sanilac to Port Huron today?
Rest Of Today: Southwest winds 15 to 20 knots. Sunny. Waves 1 to 3 feet.
Is there a small craft advisory for Port Sanilac to Port Huron?
Yes — small craft advisory in effect until Tue 8:00 PM.
How high are the waves at Port Sanilac to Port Huron right now?
Seas are running 1.3 ft at a 3-second period, measured at NDBC buoy 45209 Tue 3:10 PM, 10.0 miles from this zone. The forecast peaks at 4.0 ft Fri 2 PM.
What is the water temperature at Port Sanilac to Port Huron?
The nearest buoy read 62°F (17°C) at Tue 3:10 PM. Sea surface temperature at a single buoy can differ by several degrees from the water at a beach or in a shallow bay nearby.
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 LHZ443, issued by Detroit/Pontiac 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 NSHDTX, issued Tue 9:53 AM. Observations: NOAA National Data Buoy Center station 45209, read Tue 3:10 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.