280 FZUS53 KDLH 231000 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 500 AM CDT Sun Aug 23 2026 For waters within five nautical miles of shore on Lake Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LSZ140-231600- Grand Portage to Grand Marais MN- 500 AM CDT Sun Aug 23 2026 .TODAY...North wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots early in the afternoon, then becoming southwest late in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Southwest wind 5 to 10 knots becoming northwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...Northwest wind 5 knots becoming southwest in the afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. $$ LSZ141-231600- Grand Marais to Taconite Harbor MN- 500 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 to 10 knots becoming southwest in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Southwest wind 5 knots becoming northwest after midnight. Clear. Waves 1 foot or less. .MONDAY...Northwest wind 5 knots becoming south in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 5 knots early in the evening becoming variable 10 knots or less. Mostly cloudy. Waves 1 foot or less. $$ LSZ142-231600- Taconite Harbor to Silver Bay Harbor MN- 500 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 knots becoming northeast late in the morning, then becoming south in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Southwest wind 5 knots becoming northwest after midnight. Clear. Waves 1 foot or less. .MONDAY...Northwest wind 5 knots early in the morning becoming variable 10 knots or less, then becoming south 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Variable winds 10 knots or less. Mostly cloudy. Waves 1 foot or less. $$ LSZ143-231600- Silver Bay Harbor to Two Harbors MN- 500 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 knots becoming southeast in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming northwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming southeast 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 5 knots until early morning becoming variable 10 knots or less. Slight chance of rain showers after midnight. Waves 1 foot or less. $$ LSZ144-231600- Two Harbors to Duluth MN- 500 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 knots becoming east in the late morning and afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming east 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 5 knots. Slight chance of rain showers after midnight. Waves 1 foot or less. $$ LSZ145-231600- Duluth MN to Port Wing WI- 500 AM CDT Sun Aug 23 2026 .TODAY...Northeast wind 5 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming south after midnight, then becoming southwest early in the morning. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 5 knots becoming northeast in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 knots becoming southeast early in the morning. Slight chance of rain showers after midnight. Waves 1 foot or less. $$ LSZ146-231600- Port Wing to Sand Island WI- 500 AM CDT Sun Aug 23 2026 .TODAY...Northeast wind 5 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming southeast late in the evening, then becoming southwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming northeast 5 knots early in the afternoon becoming east. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots until early morning becoming variable 10 knots or less. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ LSZ147-231600- Sand Island to Bayfield WI- 500 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 to 10 knots becoming southeast late in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...South wind 5 knots becoming west after midnight. Clear. Waves 1 foot or less. .MONDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming northeast 5 knots early in the afternoon becoming east. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots becoming south early in the morning. Partly cloudy. Waves 1 foot or less. $$ LSZ150-231600- Outer Apostle Islands Beyond 5 NM from Mainland- 500 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 to 10 knots becoming south late in the afternoon. Sunny. Waves 1 to 2 feet. .TONIGHT...South wind 5 knots becoming west after midnight. Clear. Waves 1 foot or less. .MONDAY...Northwest wind 5 knots becoming northeast early in the afternoon, then becoming southeast late in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots becoming south early in the morning. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 foot or less. $$ LSZ121-231600- Chequamegon Bay-Bayfield to Oak Point WI- 500 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 to 10 knots becoming east late in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Southeast wind 5 knots becoming southwest after midnight. Clear. Waves 1 foot or less. .MONDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming east 5 knots in the afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 knots becoming south after midnight. Partly cloudy. Waves 1 foot or less. $$ LSZ148-231600- Oak Point to Saxon Harbor WI- 500 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 to 10 knots becoming east late in the afternoon. Sunny. Waves 1 to 2 feet. .TONIGHT...Southeast wind 5 knots becoming southwest after midnight. Clear. Waves 1 foot or less. .MONDAY...Southwest wind 5 knots becoming west late in the morning, then becoming northeast in the afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots becoming south after midnight. Partly cloudy. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH  286 FZUS53 KMKX 231010 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 510 AM CDT Sun Aug 23 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-231600- Sheboygan to Port Washington WI- 510 AM CDT Sun Aug 23 2026 .TODAY...Northwest wind 15 to 20 knots becoming north 10 to 15 knots with gusts to around 20 knots late in the afternoon. Slight chance of waterspouts in the morning. Waves 1 to 2 feet. .TONIGHT...North wind 10 to 15 knots backing northwest early in the morning. Mostly clear. Waves 1 to 2 feet. .MONDAY...Northwest wind 10 to 15 knots becoming north 5 to 10 knots early in the afternoon, then veering east late in the afternoon. Sunny. Waves around 1 foot. .MONDAY NIGHT...South wind 5 to 10 knots veering west early in the morning. Partly cloudy. Waves around 1 foot. $$ LMZ644-231600- Port Washington to North Point Light WI- 510 AM CDT Sun Aug 23 2026 .TODAY...Northwest wind 10 to 15 knots. Slight chance of waterspouts in the morning. Waves 1 to 2 feet. .TONIGHT...North wind 5 to 15 knots becoming 5 to 10 knots late in the evening, then becoming north 5 to 10 knots after midnight. Partly cloudy through around midnight then becoming clear. Waves 1 to 2 feet. .MONDAY...Northwest wind 5 to 10 knots veering northeast late in the afternoon. Sunny. Waves 1 to 2 feet. .MONDAY NIGHT...Southwest wind 5 to 10 knots veering west early in the morning. Partly cloudy. Waves around 1 foot. $$ LMZ645-231600- North Point Light to Wind Point WI- 510 AM CDT Sun Aug 23 2026 .TODAY...Northwest wind 10 to 15 knots veering north in the afternoon. Slight chance of waterspouts in the morning. Waves 2 to 4 feet subsiding to 1 to 2 feet in the late morning and afternoon. .TONIGHT...North wind 10 to 15 knots easing to 5 to 10 knots in the late evening and early morning, then backing northwest early in the morning. Partly cloudy through around midnight then becoming clear. Waves 1 to 2 feet. .MONDAY...Northwest wind 5 to 10 knots veering northeast late in the afternoon. Sunny. Waves 1 to 2 feet. .MONDAY NIGHT...Southeast wind 5 to 10 knots veering west early in the morning. Partly cloudy. Waves around 1 foot. $$ LMZ646-231600- Wind Point WI to Winthrop Harbor IL- 510 AM CDT Sun Aug 23 2026 .TODAY...Northwest wind 10 to 15 knots veering north early in the afternoon, then backing northwest late in the afternoon. Slight chance of waterspouts in the morning. Waves 1 to 2 feet. .TONIGHT...North wind 5 to 10 knots backing northwest after midnight. Mostly clear. Waves 1 to 2 feet. .MONDAY...Northwest wind 5 to 10 knots veering northeast late in the afternoon. Sunny. Waves 1 to 2 feet. .MONDAY NIGHT...East wind 5 to 10 knots veering south late in the evening, then veering southwest after midnight veering west early in the morning. Partly cloudy. Waves around 1 foot. $$ See Lake Michigan Open Waters Forecast for Tuesday through Thursday.  405 FZUS53 KDLH 231042 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 542 AM CDT Sun Aug 23 2026 For waters within five nautical miles of shore on Lake Superior. Waves are the significant wave height - the average of the highest 1/3 of the wave spectrum. Occasional wave height is the average of the highest 1/10 of the wave spectrum. LSZ140-231600- Grand Portage to Grand Marais MN- 542 AM CDT Sun Aug 23 2026 .TODAY...North wind 10 to 15 knots with gusts to around 20 knots becoming west 5 knots early in the afternoon, then becoming southwest late in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Southwest wind 5 to 10 knots becoming northwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...Northwest wind 5 knots becoming southwest in the afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 5 to 10 knots. Mostly cloudy. Waves 1 foot or less. $$ LSZ141-231600- Grand Marais to Taconite Harbor MN- 542 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 knots becoming southwest in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Southwest wind 5 knots becoming northwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...Northwest wind 5 knots becoming south in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 5 knots early in the evening becoming variable 10 knots or less. Mostly cloudy. Waves 1 foot or less. $$ LSZ142-231600- Taconite Harbor to Silver Bay Harbor MN- 542 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 knots becoming south in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Southwest wind 5 knots becoming northwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...Northwest wind 5 knots early in the morning becoming variable 10 knots or less, then becoming south 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Variable winds 10 knots or less. Mostly cloudy. Waves 1 foot or less. $$ LSZ143-231600- Silver Bay Harbor to Two Harbors MN- 542 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 to 10 knots becoming southeast in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming northwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming southeast 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 5 knots until early morning becoming variable 10 knots or less. Slight chance of rain showers after midnight. Waves 1 foot or less. $$ LSZ144-231600- Two Harbors to Duluth MN- 542 AM CDT Sun Aug 23 2026 .TODAY...North wind 10 to 15 knots becoming east 5 knots in the late morning and afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Northeast wind 5 knots in the evening becoming variable 10 knots or less. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming east 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 5 knots. Slight chance of rain showers after midnight. Waves 1 foot or less. $$ LSZ145-231600- Duluth MN to Port Wing WI- 542 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 to 10 knots becoming northeast in the late morning and afternoon. Sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming south after midnight, then becoming southwest early in the morning. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 5 knots becoming northeast in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 knots becoming southeast early in the morning. Slight chance of rain showers after midnight. Waves 1 foot or less. $$ LSZ146-231600- Port Wing to Sand Island WI- 542 AM CDT Sun Aug 23 2026 .TODAY...Northeast wind 5 to 10 knots becoming east in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming southeast late in the evening, then becoming southwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming northeast 5 knots early in the afternoon becoming east. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots until early morning becoming variable 10 knots or less. Partly cloudy in the evening then becoming mostly cloudy. Waves 1 foot or less. $$ LSZ147-231600- Sand Island to Bayfield WI- 542 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 to 10 knots becoming southeast late in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...South wind 5 knots becoming west after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming northeast 5 knots early in the afternoon becoming east. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots becoming south early in the morning. Partly cloudy. Waves 1 foot or less. $$ LSZ150-231600- Outer Apostle Islands Beyond 5 NM from Mainland- 542 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 to 10 knots becoming south late in the afternoon. Sunny. Waves 1 to 2 feet. .TONIGHT...South wind 5 knots becoming west after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...Northwest wind 5 knots becoming northeast early in the afternoon, then becoming southeast late in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots becoming south early in the morning. Mostly cloudy in the evening then becoming partly cloudy. Waves 1 foot or less. $$ LSZ121-231600- Chequamegon Bay-Bayfield to Oak Point WI- 542 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 to 10 knots becoming east late in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Southeast wind 5 knots becoming southwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming east 5 knots in the afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 knots becoming south after midnight. Partly cloudy. Waves 1 foot or less. $$ LSZ148-231600- Oak Point to Saxon Harbor WI- 542 AM CDT Sun Aug 23 2026 .TODAY...North wind 5 to 10 knots becoming east late in the afternoon. Sunny. Waves 1 to 2 feet. .TONIGHT...Southeast wind 5 knots becoming southwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...Southwest wind 5 knots becoming west late in the morning, then becoming northeast in the afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots becoming south after midnight. Partly cloudy. Waves 1 foot or less. $$ Graphical marine forecasts are available online at: weather.gov/greatlakes WFO DLH