FZUS51 KBUF 301403 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 1003 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. LEZ020-302100- Upper Niagara River and Buffalo Harbor- 1003 AM EDT Thu Apr 30 2026 .THIS AFTERNOON...Northwest winds 5 to 10 knots becoming west. A chance of 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. $$ LOZ030-302100- Lower Niagara River- 1003 AM EDT Thu Apr 30 2026 .THIS AFTERNOON...Northwest winds 5 to 10 knots becoming west. A chance of showers late. .TONIGHT...West winds 5 to 10 knots becoming light and variable. Mostly cloudy in the evening, then clearing. .FRIDAY...Light and variable winds becoming west 5 to 10 knots. Partly to mostly sunny. .FRIDAY NIGHT...West winds less than 10 knots. Partly to mostly cloudy. .SATURDAY...West winds 10 knots or less. Partly cloudy. .SUNDAY...West winds 5 to 15 knots becoming southwest 15 to 20 knots. A chance of rain showers Sunday night. .MONDAY...Southwest winds 15 to 20 knots. A chance of showers. $$ LEZ040-302100- Ripley to Dunkirk along Lake Erie- 1003 AM EDT Thu Apr 30 2026 .THIS AFTERNOON...West winds 5 to 15 knots. A chance of showers late. Waves 1 to 2 feet. .TONIGHT...West winds 10 knots or less. A chance of showers in the evening. Waves 1 to 2 feet. .FRIDAY...Light and variable winds becoming west 5 to 10 knots. A chance of rain showers. Waves 1 foot or less. .FRIDAY NIGHT...West winds 10 knots or less becoming northwest. A chance of rain showers in the evening. Waves 1 foot 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. $$ LEZ041-302100- Dunkirk to Buffalo along Lake Erie- 1003 AM EDT Thu Apr 30 2026 .THIS AFTERNOON...West winds 5 to 15 knots. A chance of showers late. Waves 2 feet or less. .TONIGHT...West winds 10 knots or less. A chance of rain showers in the evening. Waves 2 feet or less. .FRIDAY...Light and variable winds becoming west 5 to 10 knots. A chance of rain showers in the afternoon. Waves 1 foot or less. .FRIDAY NIGHT...West winds less than 10 knots becoming northwest. A chance of rain showers in the evening. Waves 1 foot or less. .SATURDAY...Northwest winds 10 knots or less. Partly cloudy. Waves 1 foot or less. .SUNDAY...West winds 5 to 15 knots becoming southwest 15 to 20 knots. A chance of rain showers Sunday night. Waves 1 foot or less building to 1 to 3 feet. .MONDAY...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers. Waves 1 to 3 feet. $$ LOZ042-302100- Niagara River to Hamlin Beach along Lake Ontario- 1003 AM EDT Thu Apr 30 2026 .THIS AFTERNOON...West winds 10 to 15 knots. Partly to mostly sunny. Waves 1 to 2 feet. .TONIGHT...West winds 5 to 15 knots. Becoming mainly clear. Waves 1 to 2 feet. .FRIDAY...West winds 5 to 10 knots. Mostly sunny. Waves 1 foot or less. .FRIDAY NIGHT...West winds 5 to 10 knots becoming northwest. Partly to mostly cloudy. Waves 1 foot or less. .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 3 feet building to 2 to 4 feet. .MONDAY...Southwest winds 15 to 25 knots. A chance of showers. Waves 2 to 4 feet building to 3 to 5 feet. Waves occasionally around 6 feet. $$ LOZ043-044-302100- Hamlin Beach to Mexico Bay along Lake Ontario including Irondequoit Bay- 1003 AM EDT Thu Apr 30 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .THIS AFTERNOON...West winds 10 to 15 knots. Partly to mostly sunny. Waves 1 to 3 feet building to 2 to 4 feet. .TONIGHT...West winds 15 to 20 knots diminishing to 5 to 15 knots. Partly cloudy. Waves 2 to 4 feet subsiding to 1 to 3 feet. .FRIDAY...West winds 5 to 10 knots. Mostly sunny. Waves 2 feet or less. .FRIDAY NIGHT...West winds 5 to 10 knots. Partly cloudy. Waves 1 foot or less. .SATURDAY...West winds 5 to 10 knots. Partly cloudy. Waves 2 feet or less. .SUNDAY...West winds 10 to 15 knots becoming southwest. A chance of rain showers Sunday night. Waves 1 to 3 feet. .MONDAY...South winds 15 to 20 knots becoming southwest. Showers likely. Waves 1 to 3 feet. The water temperature off Rochester is 44 degrees. $$ LOZ045-302100- Mexico Bay to the Saint Lawrence River along Lake Ontario- 1003 AM EDT Thu Apr 30 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM EDT THROUGH LATE TONIGHT... .THIS AFTERNOON...Northwest winds 10 to 15 knots becoming west. Mostly sunny. Waves 1 to 3 feet. .TONIGHT...West winds 5 to 15 knots becoming northwest. A chance of rain showers in the evening. Waves 2 to 4 feet subsiding to 1 to 3 feet. .FRIDAY...Northwest winds 5 to 10 knots becoming southwest. Mostly sunny. Waves 2 feet or less. .FRIDAY NIGHT...Southwest winds 5 to 10 knots becoming west. Partly cloudy. Waves 2 feet or less. .SATURDAY...West winds 5 to 15 knots. Partly cloudy. Waves 2 feet or less. .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 2 to 4 feet building to 3 to 5 feet. Waves occasionally around 6 feet. $$