FZUS61 KBUF 060802 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 402 AM EDT Wed May 6 2026 For waters beyond five nautical miles of shore on Lake Ontario 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. .SYNOPSIS...A 29.2 inch low over Hudson Bay will weaken to 29.3 inches as it moves to northern Quebec today. A 30.1 inch high over the Tennessee and Ohio Valleys Thursday will slide to the mid- Atlantic coastline Friday. A 29.6 inch low will track across the lake early Saturday, followed by a 29.7 inch low that will track near or just south of the lake for later Sunday. LOZ062-061500- Lake Ontario open waters from the Niagara River to Hamlin Beach- 402 AM EDT Wed May 6 2026 .TODAY...East winds 5 to 15 knots becoming north. Showers this morning, then a chance of showers early this afternoon. Waves 1 to 2 feet. .TONIGHT...West winds 10 knots or less becoming northwest. Waves 1 foot or less. .THURSDAY...Northwest winds 10 knots or less becoming southwest. Waves 1 foot or less. .THURSDAY NIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or less. .FRIDAY...Southwest winds 5 to 15 knots. A chance of showers Friday night. Waves 1 to 2 feet. .SATURDAY...South winds 5 to 15 knots becoming southwest. A chance of showers. Waves 1 to 3 feet. .SUNDAY...West winds 5 to 10 knots becoming northwest. A chance of showers. Waves 1 to 2 feet. $$ LOZ063>065-061500- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 402 AM EDT Wed May 6 2026 .TODAY...Northeast winds 15 to 20 knots becoming northwest and diminishing to 5 to 10 knots. Showers this morning, then a chance of showers early this afternoon. Waves 1 to 3 feet. .TONIGHT...West winds 5 to 15 knots. Waves 2 feet or less. .THURSDAY...West winds 5 to 10 knots increasing to 15 to 20 knots. Waves 1 to 3 feet. .THURSDAY NIGHT...West winds 5 to 15 knots. Waves 1 to 3 feet. .FRIDAY...West winds 5 to 15 knots becoming south. A chance of showers Friday night. Waves 2 feet or less. .SATURDAY...South winds 5 to 15 knots increasing to 15 to 20 knots. A chance of showers. Waves 1 to 3 feet. .SUNDAY...Southwest winds 5 to 15 knots becoming northwest. A chance of showers. Waves 1 to 3 feet. $$ LOZ061-061500- MAFOR 0609/ ONTARIO WEST 1/2 11206 12110 11800 13600 11700. Waves 2 feet or less. ONTARIO EAST 1/2 11116 11126 11120 11800 12600 12610. Waves 1 to 3 feet today. Waves 2 feet or less tonight. $$