FZUS51 KBUF 180743 NSHBUF Nearshore Marine Forecast National Weather Service Buffalo NY 343 AM EDT Wed Mar 18 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. LEZ020-181515- Upper Niagara River and Buffalo Harbor- 343 AM EDT Wed Mar 18 2026 .TODAY...South winds 10 knots or less becoming southwest. Partly to mostly sunny. .TONIGHT...South winds 10 knots or less. A chance of flurries overnight. .THURSDAY...South winds 5 to 10 knots becoming southwest. A chance of snow and rain showers in the morning, then a chance of rain showers in the afternoon. .THURSDAY NIGHT...Southwest winds less than 10 knots. A chance of rain showers in the evening. .FRIDAY...South winds 10 knots or less becoming west. Rain showers likely. .SATURDAY...West winds 5 to 10 knots. A chance of rain showers. .SUNDAY...Northwest winds 5 to 10 knots becoming north. A chance of rain and snow showers. The water temperature off Buffalo is 32 degrees. $$ LOZ030-181515- Lower Niagara River- 343 AM EDT Wed Mar 18 2026 .TODAY...Southwest winds 10 knots or less becoming south. Partly sunny. .TONIGHT...South winds 10 knots or less. A chance of flurries overnight. .THURSDAY...South winds 5 to 10 knots becoming southwest. A chance of snow and rain showers in the morning, then a chance of rain showers in the afternoon. .THURSDAY NIGHT...West winds 5 to 10 knots becoming light and variable. A chance of rain showers in the evening. .FRIDAY...Southwest winds 10 knots or less becoming west. Rain showers likely. .SATURDAY...West winds 5 to 10 knots. A chance of rain showers. .SUNDAY...Northwest winds 5 to 15 knots becoming north. A chance of rain and snow showers. $$ LEZ040-041-181515- Buffalo to Ripley along Lake Erie- 343 AM EDT Wed Mar 18 2026 .TODAY...South winds 5 to 10 knots. A chance of snow showers early. Waves in ice free areas 2 feet or less. .TONIGHT...South winds 5 to 15 knots. A chance of flurries overnight. Waves 2 feet or less. .THURSDAY...South winds 5 to 10 knots becoming southwest. A chance of rain and snow showers in the morning, then a chance of rain showers in the afternoon. Waves 1 foot or less. .THURSDAY NIGHT...Southwest winds less than 10 knots. A chance of rain showers in the evening. Waves 1 foot or less. .FRIDAY...South winds 10 knots or less becoming west. Rain showers likely. Waves 2 feet or less. .SATURDAY...West winds 5 to 10 knots becoming southwest. A chance of rain showers. Waves 1 to 3 feet. .SUNDAY...West winds 5 to 15 knots becoming north 15 to 20 knots. A chance of rain and snow showers. Waves 1 to 3 feet building to 2 to 4 feet. Wave heights are for ice free areas. $$ LOZ042-181515- Niagara River to Hamlin Beach along Lake Ontario- 343 AM EDT Wed Mar 18 2026 .TODAY...West winds 5 to 15 knots becoming south. A chance of snow showers early. Waves 2 to 4 feet subsiding to 1 to 3 feet. .TONIGHT...Southeast winds 5 to 15 knots becoming south. A chance of flurries overnight. Waves 2 feet or less. .THURSDAY...South winds 5 to 15 knots becoming west. A chance of snow and rain showers in the morning, then a chance of rain showers in the afternoon. Waves 2 feet or less. .THURSDAY NIGHT...West winds 10 knots or less. Mostly cloudy. Waves 2 feet or less. .FRIDAY...Southwest winds 5 to 10 knots becoming west. Rain showers likely with a chance of snow showers during the day, then rain showers likely Friday night. Waves 1 to 3 feet building to 3 to 6 feet. Waves occasionally around 7 feet. .SATURDAY...Northwest winds 10 to 15 knots becoming west. A chance of rain showers during the day, then a chance of rain and snow showers Saturday night. Waves 3 to 6 feet building to 5 to 8 feet. Waves occasionally around 10 feet. .SUNDAY...Northwest winds 15 to 25 knots becoming north. A chance of rain and snow showers. Waves 6 to 9 feet subsiding to 5 to 8 feet. Waves occasionally around 11 feet. $$ LOZ043-044-181515- Hamlin Beach to Mexico Bay along Lake Ontario including Irondequoit Bay- 343 AM EDT Wed Mar 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING... .TODAY...West winds 5 to 15 knots becoming south. Lake effect snow showers likely early, then a chance of snow showers late this morning. Waves 3 to 6 feet subsiding to 2 feet or less. Waves occasionally around 7 feet. .TONIGHT...Southeast winds 5 to 15 knots becoming south. A chance of flurries overnight. Waves 2 feet or less. .THURSDAY...South winds 5 to 15 knots becoming southwest. Mostly cloudy. Waves 2 feet or less. .THURSDAY NIGHT...West winds 10 knots or less. Mostly cloudy. Waves 2 feet or less. .FRIDAY...Southwest winds 5 to 10 knots becoming west. A chance of rain and snow showers during the day, then a chance of rain showers Friday night. Waves 1 to 3 feet building to 3 to 6 feet. Waves occasionally around 7 feet. .SATURDAY...Northwest winds 10 to 15 knots becoming west. A chance of rain showers. Waves 4 to 7 feet building to 6 to 9 feet. Waves occasionally around 11 feet. .SUNDAY...Northwest winds 15 to 25 knots becoming north to 30 knots. A chance of rain and snow showers. Waves 7 to 11 feet. Waves occasionally around 14 feet. The water temperature off Rochester is 37 degrees. $$ LOZ045-181515- Mexico Bay to the Saint Lawrence River along Lake Ontario- 343 AM EDT Wed Mar 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 AM EDT THIS MORNING... .TODAY...Northwest winds 5 to 15 knots becoming south 10 knots or less. Partly to mostly sunny. Waves in ice free areas 3 to 5 feet subsiding to 2 feet or less. Waves in ice free areas occasionally around 6 feet. .TONIGHT...Southeast winds 5 to 15 knots becoming south 15 to 20 knots. Mostly cloudy. Waves 1 to 3 feet building to 2 to 4 feet. .THURSDAY...South winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of snow showers. Waves 2 to 4 feet subsiding to 1 to 3 feet. .THURSDAY NIGHT...Southwest winds 10 knots or less becoming west. Mostly cloudy. Waves 2 feet or less. .FRIDAY...Southwest winds 10 knots or less becoming south. A chance of rain and snow showers during the day, then a chance of rain showers Friday night. Waves 2 feet or less building to 2 to 4 feet. .SATURDAY...Northwest winds 10 to 15 knots becoming southwest. A chance of rain showers during the day, then a chance of rain and snow showers Saturday night. Waves 2 to 4 feet building to 7 to 10 feet. Waves occasionally around 13 feet. .SUNDAY...Northwest winds 15 to 25 knots becoming north to 30 knots. A chance of rain and snow showers. Waves 7 to 10 feet subsiding to 5 to 9 feet. Waves occasionally around 13 feet. Wave heights are for ice free areas. $$