Marine Weather and Tide Forecast for Sheboygan, WI

Sunrise 5:19 AM   Sunset 8:15 PM Moonrise 1:30 AM   Moonset 11:13 AM

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LMZ669 Expires:202505200315;;805045 Fzus63 Kmkx 191935 Glflm
open lake forecast for lake michigan national weather service milwaukee/sullivan wi 235 pm cdt Mon may 19 2025
for waters beyond five nautical miles of shore on lake michigan.
waves are provided as a range of significant wave heights, which is the average of the highest 1/3 of the wave, along with the average height of the highest 10% of the waves which will occasionally be encountered.
Synopsis -
30.5 inch high pressure will slide a bit east northeast with the approaching 29.5 inch low pressure migrating toward the mississippi river tonight, and will ultimately approach southern lake michigan during the daytime hours Tuesday. The low's approach will result in a more easterly wind shift across lake michigan tonight. Winds will become gusty Tuesday morning and afternoon, especially across the southern half of lake michigan, where widespread 25-30 knot gusts are forecast. A few gusts could approach gale thresholds late Tuesday morning into the early afternoon, though any such conditions aren't anticipated to be long-lasting or widespread. Have Thus held off on any gale headlines, but will continue to Monitor trends into tonight. Low pressure will shift into the ohio river valley Tuesday night into Wednesday, allowing winds to turn out of the north Wednesday afternoon. Periods of showers and isolated Thunderstorms will accompany the approaching & passing area of low pressure from late tonight through Wednesday. SEvere weather is not expected. 30.1 inch high pressure will move into the western great lakes Thursday through Friday, allowing winds to gradually taper across the open waters.
lmz080-669-671-673-675-777-779-870-872-874-876-878-200315- lake michigan from michigan city in to st. Joseph mi 5 nm offshore to mid lake- lake michigan from sheboygan to port washington wi 5 nm offshore to mid lake- lake michigan from port washington to north point light wi 5 nm offshore to mid lake- lake michigan from north point light to wind point wi 5 nm offshore to mid lake- lake michigan from wind point wi to winthrop harbor il 5 nm offshore to mid lake- lake michigan from winthrop harbor to wilmette harbor il 5 nm offshore to mid lake- lake michigan from wilmette harbor il to michigan city in 5 nm offshore to mid lake- lake michigan from whitehall to pentwater mi 5 nm offshore to mid lake- lake michigan from grand haven to whitehall mi 5 nm offshore to mid lake- lake michigan from holland to grand haven mi 5 nm offshore to mid lake- lake michigan from south haven to holland mi 5 nm offshore to mid lake- lake michigan from st. Joseph to south haven mi 5 nm offshore to mid lake- 235 pm cdt Mon may 19 2025
sheboygan wi to pentwater mi south - .
Tonight - Northeast winds 15 to 25 kt becoming east to 30 kt from late evening on. Waves 4 to 7 ft occasionally to 9 ft building to 6 to 9 ft occasionally to 12 ft. Tuesday - East winds to 30 kt. Chance of showers in the morning, then showers in the afternoon. Waves 8 to 11 ft occasionally to 14 ft. Tuesday night - East winds to 30 kt. Chance of showers. Waves 7 to 10 ft occasionally to 13 ft. Wednesday - Northeast winds 15 to 25 kt. Showers likely. Waves 4 to 7 ft occasionally to 9 ft. Wednesday night - North winds 10 to 20 kt. Chance of showers in the evening. Waves 4 to 6 ft occasionally to 8 ft. Thursday - North winds 15 to 25 kt increasing to 30 kt. Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft. Thursday night - North winds 15 to 25 kt becoming northwest 10 to 20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. Friday - Northwest winds 10 to 20 kt becoming north 15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft. Saturday - North winds 10 to 15 kt increasing to 10 to 20 kt. Waves 1 to 3 ft.

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