FZUS51 KBUF 190803 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 403 AM EDT Tue May 19 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-LOZ030-191500- Upper Niagara River and Buffalo Harbor-Lower Niagara River- 403 AM EDT Tue May 19 2026 .TODAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. Partly to mostly sunny. .TONIGHT...Southwest winds 10 to 15 knots becoming west. Showers with a chance of thunderstorms. .WEDNESDAY...Northwest winds 5 to 10 knots. A chance of showers in the morning. .WEDNESDAY NIGHT...North winds 10 knots or less. Partly cloudy. .THURSDAY...Northeast winds 10 knots or less becoming east. Partly to mostly cloudy. .FRIDAY...East winds 5 to 15 knots. A chance of showers during the day, then showers likely Friday night. .SATURDAY...East winds 5 to 15 knots becoming southeast less than 10 knots. Showers likely. Winds and waves higher in and near thunderstorms. The water temperature off Buffalo is 52 degrees. $$ LEZ040-041-191500- Buffalo to Ripley along Lake Erie- 403 AM EDT Tue May 19 2026 .TODAY...Southwest winds 10 to 15 knots. A chance of showers early. A chance of showers and thunderstorms late. Waves 2 feet or less. .TONIGHT...Southwest winds around 10 knots becoming west. Showers with a chance of thunderstorms. Waves 1 to 3 feet. .WEDNESDAY...West winds 5 to 10 knots. A chance of showers and thunderstorms in the morning. Waves 1 to 2 feet. .WEDNESDAY NIGHT...West winds 5 to 10 knots becoming northeast. Partly to mostly cloudy. Waves 1 foot or less. .THURSDAY...Northeast winds 5 to 10 knots becoming east. Partly to mostly cloudy. Waves 2 feet or less. .FRIDAY...East winds 5 to 10 knots increasing to 15 to 20 knots. A chance of showers during the day, then showers Friday night. Waves 2 feet or less. .SATURDAY...Southeast winds 15 to 20 knots becoming south 5 to 15 knots. Showers with a chance of thunderstorms. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ042-191500- Niagara River to Hamlin Beach along Lake Ontario- 403 AM EDT Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH LATE TONIGHT... .TODAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. A chance of showers early. Waves 1 to 3 feet building to 2 to 4 feet. .TONIGHT...Southwest winds 15 to 20 knots becoming west. Showers with a chance of thunderstorms in the evening, then showers likely overnight. Waves 2 to 4 feet subsiding to 1 to 3 feet. .WEDNESDAY...West winds 10 to 15 knots. A chance of showers in the morning. Waves 1 to 3 feet. .WEDNESDAY NIGHT...Northwest winds 5 to 15 knots becoming north. Partly cloudy. Waves 1 to 3 feet. .THURSDAY...Northeast winds 5 to 15 knots becoming east 10 knots or less. Partly to mostly cloudy. Waves 2 feet or less. .FRIDAY...East winds 10 to 15 knots increasing to 15 to 20 knots. Showers likely Friday night. Waves 2 feet or less building to 2 to 4 feet. .SATURDAY...East winds 15 to 20 knots becoming southeast 10 to 15 knots. Showers likely. Waves 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally around 6 feet. Winds and waves higher in and near thunderstorms. $$ LOZ043-044-191500- Hamlin Beach to Mexico Bay along Lake Ontario including Irondequoit Bay- 403 AM EDT Tue May 19 2026 .TODAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. Mostly cloudy this morning, then becoming mostly sunny. Waves 1 to 3 feet. .TONIGHT...Southwest winds 10 to 15 knots becoming west 15 to 20 knots. Showers with a chance of thunderstorms. Waves 1 to 3 feet. .WEDNESDAY...West winds 15 to 20 knots. A chance of showers. Waves 2 to 4 feet building to 3 to 6 feet. Waves occasionally around 7 feet. .WEDNESDAY NIGHT...West winds 15 to 20 knots becoming north 10 to 15 knots. Partly cloudy. Waves 3 to 6 feet subsiding to 2 to 4 feet. Waves occasionally around 7 feet. .THURSDAY...Northeast winds 5 to 15 knots becoming east less than 10 knots. Partly cloudy. Waves 1 to 3 feet subsiding to 1 foot or less. .FRIDAY...East winds 5 to 15 knots increasing to 15 to 20 knots. Showers likely Friday night. Waves 1 to 3 feet building to 2 to 4 feet. .SATURDAY...East winds 15 to 20 knots becoming southeast 10 to 15 knots. Showers. Waves 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally around 6 feet. Winds and waves higher in and near thunderstorms. The water temperature off Rochester is 49 degrees. $$ LOZ045-191500- Mexico Bay to the Saint Lawrence River along Lake Ontario- 403 AM EDT Tue May 19 2026 .TODAY...Southwest winds 10 to 15 knots. A chance of showers early. Waves 2 feet or less. .TONIGHT...Southwest winds 10 to 15 knots. Showers with a chance of thunderstorms. Waves 1 to 3 feet. .WEDNESDAY...West winds 10 to 15 knots becoming southwest 15 to 20 knots. A chance of showers. Waves 2 to 4 feet building to 3 to 6 feet. Waves occasionally around 7 feet. .WEDNESDAY NIGHT...West winds 15 to 20 knots becoming north 10 to 15 knots. Partly cloudy. Waves 3 to 6 feet subsiding to 1 to 3 feet. Waves occasionally around 7 feet. .THURSDAY...North winds 10 to 15 knots becoming light and variable. Mainly clear, then becoming partly cloudy. Waves 2 feet or less. .FRIDAY...East winds 10 knots or less increasing to 10 to 15 knots. Showers likely Friday night. Waves 1 foot or less. .SATURDAY...East winds 15 to 20 knots becoming southeast. Showers likely. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$