FZUS53 KDLH 231600 NSHDLH Nearshore Marine Forecast National Weather Service Duluth MN 1100 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. LSZ140-232200- Grand Portage to Grand Marais MN- 1100 AM CDT Sun Aug 23 2026 .REST OF TODAY...Northwest wind 5 knots becoming southwest late. 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. $$ LSZ141-232200- Grand Marais to Taconite Harbor MN- 1100 AM CDT Sun Aug 23 2026 .REST OF TODAY...West wind 5 to 10 knots becoming southwest in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...Southwest wind 5 knots becoming northwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...Northwest wind 5 knots becoming south in the late morning and afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southwest wind 5 knots early in the evening becoming variable 10 knots or less. Mostly cloudy. Waves 1 foot or less. $$ LSZ142-232200- Taconite Harbor to Silver Bay Harbor MN- 1100 AM CDT Sun Aug 23 2026 .REST OF TODAY...East wind 5 to 10 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. $$ LSZ143-232200- Silver Bay Harbor to Two Harbors MN- 1100 AM CDT Sun Aug 23 2026 .REST OF TODAY...East wind 5 to 10 knots becoming southeast in the afternoon. Sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming northwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...Variable winds 10 knots or less becoming southeast 5 knots in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Northeast wind 5 knots until early morning becoming variable 10 knots or less. Slight chance of rain showers after midnight. Waves 1 foot or less. $$ LSZ144-232200- Two Harbors to Duluth MN- 1100 AM CDT Sun Aug 23 2026 .REST OF TODAY...East wind 5 knots. 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. $$ LSZ145-232200- Duluth MN to Port Wing WI- 1100 AM CDT Sun Aug 23 2026 .REST OF TODAY...East wind 5 knots. Sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming south after midnight, then becoming southwest early in the morning. Mostly clear. Waves 1 foot or less. .MONDAY...South wind 5 knots becoming northeast in the afternoon. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 knots becoming southeast early in the morning. Slight chance of rain showers after midnight. Waves 1 foot or less. $$ LSZ146-232200- Port Wing to Sand Island WI- 1100 AM CDT Sun Aug 23 2026 .REST OF TODAY...East wind 5 to 10 knots easing to 5 knots late. Sunny. Waves 1 foot or less. .TONIGHT...East wind 5 knots becoming southeastlate 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. $$ LSZ147-232200- Sand Island to Bayfield WI- 1100 AM CDT Sun Aug 23 2026 .REST OF TODAY...Northeast wind 5 to 10 knots becoming southeast late. Sunny. Waves 1 foot or less. .TONIGHT...South wind 5 knots becoming west after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming northeast 5 knots early in the afternoon becoming east. Mostly sunny. Waves 1 foot or less. .MONDAY NIGHT...Southeast wind 5 knots becoming south early in the morning. Partly cloudy. Waves 1 foot or less. $$ LSZ150-232200- Outer Apostle Islands Beyond 5 NM from Mainland- 1100 AM CDT Sun Aug 23 2026 .REST OF TODAY...North wind 5 to 10 knots becoming south late. 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. $$ LSZ121-232200- Chequamegon Bay-Bayfield to Oak Point WI- 1100 AM CDT Sun Aug 23 2026 .REST OF TODAY...Northeast wind 5 knots becoming east late. Sunny. Waves 1 foot or less. .TONIGHT...Southeast wind 5 knots becoming southwest after midnight. Mostly clear. Waves 1 foot or less. .MONDAY...West wind 5 knots early in the morning becoming variable 10 knots or less, then becoming east 5 knots in the afternoon. Sunny. Waves 1 foot or less. .MONDAY NIGHT...East wind 5 knots becoming south after midnight. Partly cloudy. Waves 1 foot or less. $$ LSZ148-232200- Oak Point to Saxon Harbor WI- 1100 AM CDT Sun Aug 23 2026 .REST OF TODAY...North wind 5 knots becoming east late. 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