FZUS51 KBUF 200803 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 403 AM EDT Wed May 20 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-LOZ030-201500- Upper Niagara River and Buffalo Harbor-Lower Niagara River- 403 AM EDT Wed May 20 2026 .TODAY...Northwest winds 5 to 10 knots. A chance of showers early. .TONIGHT...North winds less than 10 knots. Mostly cloudy. .THURSDAY...Northeast winds 5 to 10 knots. Mostly sunny. .THURSDAY NIGHT...Northeast winds 10 knots or less becoming east. Partly to mostly cloudy. .FRIDAY...East winds 5 to 10 knots. Showers likely Friday night. .SATURDAY...East winds 5 to 15 knots becoming southeast. Showers. .SUNDAY...South winds 5 to 10 knots becoming light and variable. A chance of showers. The water temperature off Buffalo is 55 degrees. $$ LEZ040-041-201500- Buffalo to Ripley along Lake Erie- 403 AM EDT Wed May 20 2026 .TODAY...Northwest winds 10 knots or less becoming west. A chance of showers early. Waves 1 to 3 feet. .TONIGHT...West winds 10 knots or less becoming northeast. Mostly cloudy. Waves 1 foot or less. .THURSDAY...Northeast winds 10 to 15 knots. Mostly sunny. Waves 1 to 3 feet. .THURSDAY NIGHT...Northeast winds 5 to 15 knots becoming east. Partly to mostly cloudy. Waves 2 feet or less. .FRIDAY...East winds 5 to 15 knots. A chance of showers during the day, then showers Friday night. Waves 2 feet or less. .SATURDAY...Southeast winds 15 to 20 knots diminishing to 10 to 15 knots. Showers with a chance of thunderstorms. Waves 2 feet or less. .SUNDAY...South winds 10 knots or less. A chance of showers during the day, then showers likely Sunday night. Waves 1 foot or less. Winds and waves higher in and near thunderstorms. $$ LOZ042-201500- Niagara River to Hamlin Beach along Lake Ontario- 403 AM EDT Wed May 20 2026 .TODAY...West winds 15 to 20 knots becoming northwest 10 to 15 knots. Partly to mostly sunny. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...Northwest winds 5 to 15 knots becoming northeast. Mostly cloudy. Waves 1 to 3 feet. .THURSDAY...Northeast winds 5 to 15 knots becoming east. Mostly sunny. Waves 1 to 2 feet. .THURSDAY NIGHT...East winds less than 10 knots. Partly cloudy. Waves 1 foot or less. .FRIDAY...East winds 15 to 20 knots. Showers likely Friday night. Waves 1 to 3 feet building to 2 to 4 feet, then subsiding to 1 to 3 feet. .SATURDAY...East winds 15 to 25 knots becoming southeast. Showers during the day, then showers likely Saturday night. Waves 3 to 6 feet subsiding to 2 to 4 feet. Waves occasionally around 7 feet. .SUNDAY...Southeast winds 5 to 15 knots becoming south. Showers likely during the day, then a chance of showers Sunday night. Waves 1 to 3 feet subsiding to 1 foot or less. $$ LOZ043-044-201500- Hamlin Beach to Mexico Bay along Lake Ontario including Irondequoit Bay- 403 AM EDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS EVENING... .TODAY...West winds 15 to 20 knots. Mostly cloudy this morning, then becoming mostly sunny. Waves 2 to 4 feet building to 3 to 6 feet. Waves occasionally around 7 feet. .TONIGHT...West winds 15 to 20 knots becoming northeast 10 to 15 knots. Mostly cloudy. Waves 3 to 6 feet subsiding to 2 to 4 feet. Waves occasionally around 7 feet. .THURSDAY...Northeast winds 5 to 15 knots becoming north. Mostly sunny. Waves 1 to 3 feet. .THURSDAY NIGHT...Northwest winds less than 10 knots. Partly cloudy. Waves 1 foot or less. .FRIDAY...East winds 5 to 15 knots. A chance of showers Friday night. Waves 1 to 3 feet. .SATURDAY...Southeast winds 15 to 25 knots. Showers. Waves 3 to 6 feet subsiding to 2 to 4 feet. Waves occasionally around 7 feet. .SUNDAY...Southeast winds 15 to 20 knots diminishing to 10 to 15 knots. Showers likely. Waves 2 to 4 feet subsiding to 1 to 3 feet. The water temperature off Rochester is 50 degrees. $$ LOZ045-201500- Mexico Bay to the Saint Lawrence River along Lake Ontario- 403 AM EDT Wed May 20 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS EVENING... .TODAY...West winds 10 to 15 knots increasing to 15 to 20 knots. Mostly cloudy this morning, then becoming mostly sunny. Waves 2 to 4 feet building to 3 to 6 feet. Waves occasionally around 7 feet. .TONIGHT...West winds 15 to 20 knots becoming north. Partly to mostly cloudy. Waves 3 to 5 feet subsiding to 1 to 3 feet. Waves occasionally around 6 feet. .THURSDAY...Northeast winds 15 to 20 knots becoming north 5 to 15 knots. Mostly sunny. Waves 2 feet or less. .THURSDAY NIGHT...Northwest winds less than 10 knots becoming east. Mainly clear in the evening, then becoming partly cloudy. Waves 1 foot or less. .FRIDAY...East winds 10 knots or less. A chance of showers Friday night. Waves 1 foot or less. .SATURDAY...East winds 10 to 15 knots becoming southeast and increasing to 15 to 25 knots. Showers likely. Waves 1 to 3 feet building to 2 to 4 feet. .SUNDAY...Southeast winds 15 to 25 knots becoming south. Showers likely. Waves 2 to 4 feet subsiding to 1 to 3 feet. $$