FZUS61 KBUF 090202 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1002 PM EDT Fri May 8 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 30.1 inch high will drift off the Mid Atlantic coast through tonight. A weak 29.5 inch low will then move from the upper Great Lakes Saturday to western Quebec by early Sunday before moving to northern Quebec early Monday. Meanwhile, a trailing cold front will cross the lake Sunday night. A 30.4 inch high will then build from the upper Great Lakes Monday to the lower Great Lakes by Tuesday. LOZ062-090900- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1002 PM EDT Fri May 8 2026 .OVERNIGHT...South winds 5 to 10 knots. Waves 2 feet or less. .SATURDAY...Southeast winds 5 to 15 knots. A chance of showers late. Waves 2 feet or less. .SATURDAY NIGHT...Southwest winds 15 to 20 knots becoming west 10 to 15 knots. Showers likely in the evening, then a chance of showers overnight. Waves 1 to 3 feet building to 2 to 4 feet, then subsiding to 1 to 3 feet. .SUNDAY...West winds 5 to 10 knots. Waves 1 to 2 feet. .SUNDAY NIGHT...West winds 10 knots or less becoming northwest. Waves 1 foot or less. .MONDAY...West winds 5 to 15 knots becoming northwest. Waves 2 feet or less. .TUESDAY...Northwest winds 10 knots or less becoming south. A chance of rain showers Tuesday night. Waves 2 feet or less. .WEDNESDAY...Southeast winds 5 to 15 knots becoming north. A chance of showers. Waves 2 feet or less. $$ LOZ063>065-090900- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1002 PM EDT Fri May 8 2026 .OVERNIGHT...South winds 5 to 15 knots. Waves 2 feet or less. .SATURDAY...Southeast winds 5 to 15 knots. Waves 2 feet or less. .SATURDAY NIGHT...South winds 10 to 15 knots becoming west. Showers. Waves 1 to 3 feet. .SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots. Waves 1 to 3 feet. .SUNDAY NIGHT...West winds 5 to 15 knots becoming northwest. Waves 1 to 3 feet. .MONDAY...West winds 5 to 15 knots becoming northwest. Waves 1 to 3 feet. .TUESDAY...Northwest winds 5 to 15 knots becoming south. Waves 2 feet or less. .WEDNESDAY...Southeast winds 5 to 10 knots becoming northeast. A chance of showers. Waves 1 foot or less. $$ LOZ061-090900- MAFOR 0903/ ONTARIO WEST 1/2 12400 12300 11200 11310 11410 11510. A chance of showers Saturday afternoon and Saturday evening. Waves 2 feet or less overnight and Saturday. Waves 1 to 3 feet building to 2 to 4 feet Saturday evening. ONTARIO EAST 1/2 12410 13310 11300 11310 11416. Waves 2 feet or less overnight and Saturday. Waves 1 to 3 feet Saturday evening. $$