Marine Forecast
Illustrated map of Lake Geneva

Marine forecast

Lake Michigan from Two Rivers to Sheboygan, WI

current wind
11 kt W
Gusts
14 kt
Seas
2.6 ft
Period
5 sec
Air
68°F

Observed Tue 2:10 PM | LMZ567

Gusts now
14 kt
Seas now
2.6 ft · 5 sec
Air
68°F
72-hr peak
36 kt
Peak seas
7 ft

In brief

At 2:10 pm CDT on Oct 13, 2026, NDBC station SGNW3 (Sheboygan, WI, 23 miles away) measured wind from the W at 11 kt, gusting to 14 kt; buoy 45210 measured seas of 2.6 ft. The NWS forecast for Lake Michigan from Two Rivers to Sheboygan, WI issued at 9:07 am CDT on Oct 13, 2026 reads, for rest of today: “West winds 10 to 20 kt becoming northwest. Patchy fog through mid morning.”

Source: National Weather Service Milwaukee/Sullivan WI forecast; NDBC observations

Wind forecast · ktPeak 36 kt

05101520253035404550Wed 14Thu 15Fri 1605101520253035404550Wed 14Thu 15Fri 16
Sustained GustOct 13-16 | CDT

Seas forecast · ftPeak 7 ft

01234567Wed 14Thu 15Fri 1601234567Wed 14Thu 15Fri 16
Oct 13-16 | CDT

NWS marine forecast

PeriodForecast
Rest Of TodayWest winds 10 to 20 kt becoming northwest. Patchy fog through mid morning. Chance of showers through mid morning. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
TonightNorth winds 10 to 20 kt. Waves 1 to 3 ft.
WednesdayNorth winds 10 to 20 kt. Waves 2 to 4 ft.
Wednesday NightNorth winds 10 to 20 kt becoming northeast. Waves 2 to 4 ft.
ThursdaySoutheast winds 10 to 15 kt. Waves 2 to 4 ft.
Thursday NightSouthwest winds 10 to 15 kt becoming northwest gales to 35 kt. Rain showers likely. Waves 1 to 2 ft building to 6 to 9 ft occasionally to 12 ft.
FridayNorthwest gales to 45 kt. Chance of rain showers. Waves 14 to 18 ft occasionally to 23 ft.
SaturdayWest winds 10 to 20 kt becoming southwest to 30 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.

Issued Tue 9:07 AM by Milwaukee/Sullivan WI (product GLFLM).

Synopsis

West to northwest winds are expected today, remaining breezy as low pressure departs east. Light north winds expected tonight night, with isolated thunderstorms possible across far southern portions of the lake. Northerly winds continue Wednesday as high pressure moves eastward over the northern half of the lake, then easterly into Wednesday night as high pressure moves eastward. Winds weaken into Thursday as low pressure moves east through the Mississippi Valley, then become northwesterly gales late Thursday night into Friday as low pressure moves into the eastern Great Lakes and intensifies. A few storm force gusts are possible Friday. LMZ261-362-364-366-563-565-567-868-132130- Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM offshore to Mid Lake- Lake Michigan South of a line from Seul Choix Point to the Mackinac Bridge and north of a line from Charlevoix MI to South Fox Island 5 NM offshore- Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to Mid Lake- Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to Mid Lake- Lake Michigan from Rock Island Passage to Sturgeon Bay WI- Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to Mid Lake- Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to Mid Lake- Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid Lake- 907 AM CDT Tue Oct 13 2026 SHEBOYGAN WI TO PENTWATER MI NORTH...

TimeWindGustSeasWater
Tue 2:10 PM 11 kt W 14 kt — —
Tue 1:50 PM 12 kt WNW 16 kt — —
Tue 12:50 PM 12 kt W 16 kt — —
Tue 11:50 AM 13 kt WNW 17 kt — —
Tue 10:50 AM 12 kt W 16 kt — —
Tue 9:50 AM 14 kt W 18 kt — —
Tue 8:50 AM 12 kt W 16 kt — —
Tue 7:50 AM 11 kt WNW 19 kt — —
Tue 6:50 AM 12 kt WNW 19 kt — —
Tue 5:50 AM 8 kt WSW 10 kt — —
Tue 4:50 AM 3 kt SSW 4 kt — —
Tue 3:50 AM 4 kt S 5 kt — —

Observed Tue 2:10 PM at NDBC buoy SGNW3 (Sheboygan, WI), 22.7 miles away. Seas from buoy 45210 (Rawley Point East, WI (269)), 22.4 miles away, at Tue 1:56 PM.

What is the marine forecast for Lake Michigan from Two Rivers to Sheboygan today?

Rest Of Today: West winds 10 to 20 kt becoming northwest. Patchy fog through mid morning. Chance of showers through mid morning. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.

Is there a small craft advisory for Lake Michigan from Two Rivers to Sheboygan?

No advisories, warnings or watches are in effect for NWS zone LMZ567 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 Lake Michigan from Two Rivers to Sheboygan right now?

Seas are running 2.6 ft at a 5-second period, measured at NDBC buoy SGNW3 Tue 2:10 PM, 22.7 miles from this zone. The forecast peaks at 7.0 ft Fri 1 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 LMZ567, issued by Milwaukee/Sullivan WI, 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 GLFLM, issued Tue 9:07 AM. Observations: NOAA National Data Buoy Center station SGNW3, read Tue 2:10 PM. Retrieved Oct 13, 2:42 PM. Conditions offshore change faster than any page can be rebuilt, so check the current NWS bulletin and your own instruments before going out.