FZUS51 KBUF 300803 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 403 AM EDT Thu Apr 30 2026 For waters within five nautical miles of shore 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. LEZ020-301500- Upper Niagara River and Buffalo Harbor- 403 AM EDT Thu Apr 30 2026 .TODAY...Northwest winds 10 knots or less becoming west. A chance of rain showers late. .TONIGHT...West winds 5 to 10 knots becoming light and variable. A chance of rain showers in the evening. .FRIDAY...Light and variable winds becoming west 5 to 10 knots. Partly to mostly sunny. .FRIDAY NIGHT...West winds less than 10 knots. Partly to mostly cloudy. .SATURDAY...West winds 10 knots or less. Partly cloudy. .SUNDAY...West winds 5 to 15 knots becoming southwest. A chance of rain showers Sunday night. .MONDAY...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers. The water temperature off Buffalo is 46 degrees. $$ LOZ030-301500- Lower Niagara River- 403 AM EDT Thu Apr 30 2026 .TODAY...Northwest winds 10 knots or less becoming west. A chance of rain showers late. .TONIGHT...West winds 5 to 10 knots becoming light and variable. Mostly cloudy in the evening, then clearing. .FRIDAY...Light and variable winds becoming west 5 to 10 knots. Partly to mostly sunny. .FRIDAY NIGHT...West winds less than 10 knots. Partly to mostly cloudy. .SATURDAY...West winds 10 knots or less. Partly cloudy. .SUNDAY...West winds 5 to 15 knots becoming southwest 15 to 20 knots. A chance of rain showers Sunday night. .MONDAY...Southwest winds 15 to 20 knots. A chance of showers. $$ LEZ040-301500- Ripley to Dunkirk along Lake Erie- 403 AM EDT Thu Apr 30 2026 .TODAY...West winds 5 to 15 knots. A chance of rain showers late. Waves 1 to 3 feet. .TONIGHT...West winds 10 knots or less. Mostly cloudy in the evening, then clearing. Waves 2 to 4 feet subsiding to 1 to 2 feet. .FRIDAY...Light and variable winds becoming west 5 to 10 knots. A chance of rain showers. Waves 1 to 2 feet. .FRIDAY NIGHT...West winds 10 knots or less becoming northwest. A chance of rain showers in the evening. Waves 1 to 2 feet. .SATURDAY...Northwest winds 10 knots or less. Partly cloudy. Waves 1 to 2 feet. .SUNDAY...West winds 5 to 15 knots becoming southwest 15 to 20 knots. A chance of rain showers Sunday night. Waves 1 to 3 feet. .MONDAY...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers. Waves 1 to 3 feet. $$ LEZ041-301500- Dunkirk to Buffalo along Lake Erie- 403 AM EDT Thu Apr 30 2026 .TODAY...West winds 5 to 15 knots. A chance of rain showers late. Waves 1 to 3 feet. .TONIGHT...West winds 10 knots or less. A chance of rain showers in the evening. Waves 2 to 4 feet subsiding to 1 foot or less. .FRIDAY...Light and variable winds becoming west 5 to 10 knots. A chance of rain showers in the afternoon. Waves 2 feet or less. .FRIDAY NIGHT...West winds less than 10 knots becoming northwest. A chance of rain showers in the evening. Waves 2 feet or less. .SATURDAY...Northwest winds 10 knots or less. Partly cloudy. Waves 2 feet or less. .SUNDAY...West winds 5 to 15 knots becoming southwest 15 to 20 knots. A chance of rain showers Sunday night. Waves 1 to 3 feet. .MONDAY...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers. Waves 1 to 3 feet. $$ LOZ042-301500- Niagara River to Hamlin Beach along Lake Ontario- 403 AM EDT Thu Apr 30 2026 .TODAY...West winds 10 to 15 knots. Partly sunny this morning, then becoming mostly sunny. Waves 1 to 3 feet building to 2 to 4 feet. .TONIGHT...West winds 5 to 15 knots. Becoming mainly clear. Waves 1 to 3 feet. .FRIDAY...West winds 5 to 10 knots. Mostly sunny. Waves 1 to 2 feet. .FRIDAY NIGHT...West winds 5 to 10 knots becoming northwest. Partly to mostly cloudy. Waves 1 to 2 feet. .SATURDAY...West winds 5 to 10 knots becoming northwest. Partly cloudy. Waves 1 to 2 feet. .SUNDAY...West winds 5 to 15 knots becoming southwest 15 to 20 knots. A chance of rain showers Sunday night. Waves 1 to 2 feet. .MONDAY...Southwest winds 15 to 25 knots. A chance of showers. Waves 1 to 3 feet. $$ LOZ043-044-301500- Hamlin Beach to Mexico Bay along Lake Ontario including Irondequoit Bay- 403 AM EDT Thu Apr 30 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON EDT TODAY THROUGH LATE TONIGHT... .TODAY...West winds 15 to 20 knots diminishing to 10 to 15 knots. Mostly cloudy this morning, then becoming mostly sunny. Waves 2 to 4 feet building to 3 to 5 feet. Waves occasionally around 6 feet. .TONIGHT...West winds 15 to 20 knots diminishing to 5 to 15 knots. Partly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally around 6 feet. .FRIDAY...West winds 5 to 10 knots. Mostly sunny. Waves 1 to 3 feet. .FRIDAY NIGHT...West winds 5 to 10 knots. Partly cloudy. Waves 1 to 3 feet. .SATURDAY...West winds 5 to 10 knots. Partly cloudy. Waves 1 to 3 feet. .SUNDAY...West winds 10 to 15 knots becoming southwest. A chance of rain showers Sunday night. Waves 1 to 3 feet. .MONDAY...South winds 15 to 20 knots becoming southwest. Showers likely. Waves 2 feet or less. The water temperature off Rochester is 42 degrees. $$ LOZ045-301500- Mexico Bay to the Saint Lawrence River along Lake Ontario- 403 AM EDT Thu Apr 30 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH LATE TONIGHT... .TODAY...Northwest winds 10 to 15 knots becoming west. A chance of showers early. Waves 1 to 3 feet building to 2 to 4 feet. .TONIGHT...West winds 5 to 15 knots becoming northwest. Mostly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally around 6 feet. .FRIDAY...Northwest winds 5 to 10 knots becoming southwest. Mostly sunny. Waves 1 to 3 feet. .FRIDAY NIGHT...Southwest winds 5 to 10 knots becoming west. Partly cloudy. Waves 1 to 3 feet. .SATURDAY...West winds 5 to 15 knots. Partly cloudy. Waves 1 to 3 feet. .SUNDAY...West winds 10 to 15 knots becoming south 15 to 20 knots. A chance of rain showers Sunday night. Waves 1 to 3 feet. .MONDAY...South winds 15 to 20 knots becoming southwest. Showers likely. Waves 1 to 3 feet. $$