FZUS61 KBUF 162003 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 403 PM EDT Fri Oct 16 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...Behind a recent cold front passage, a ridge averaging 30.2 inches affects the lake through this Wednesday. One embedded high pressure center wobbles northeastward from the central Great Plains to near Newfoundland through Sunday night. Another embedded and reinforcing high pressure center should move from near Manitoba to near the Canadian Maritimes this Monday through Wednesday. LOZ062-170300- Lake Ontario open waters from the Niagara River to Hamlin Beach- 403 PM EDT Fri Oct 16 2026 .TONIGHT...Northwest winds to 30 knots becoming north. A chance of showers early. Waves 5 to 8 feet. Waves occasionally around 10 feet. .SATURDAY...North winds 15 to 25 knots becoming northwest and diminishing to 5 to 15 knots. Waves 3 to 6 feet subsiding to 1 to 3 feet. .SATURDAY NIGHT...West winds 5 to 15 knots becoming southwest. Waves 1 to 2 feet. .SUNDAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. Waves 1 to 3 feet. .SUNDAY NIGHT...Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet. .MONDAY...Southwest winds 10 knots or less becoming north. Waves 2 feet or less. .TUESDAY...Northeast winds 10 knots or less increasing to 10 to 15 knots. Waves 2 feet or less. .WEDNESDAY...Northeast winds 5 to 15 knots becoming east. Waves 1 to 2 feet. $$ LOZ063>065-170300- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 403 PM EDT Fri Oct 16 2026 .TONIGHT...Northwest winds to 30 knots becoming north. A chance of showers early. Waves 5 to 8 feet. Waves occasionally around 10 feet. .SATURDAY...North winds 15 to 25 knots becoming northwest and diminishing to 10 to 15 knots. Waves 5 to 8 feet subsiding to 1 to 3 feet. Waves occasionally around 10 feet. .SATURDAY NIGHT...Northwest winds 5 to 10 knots becoming southwest. Waves 2 feet or less. .SUNDAY...Southwest winds 10 to 15 knots. Waves 1 to 3 feet. .SUNDAY NIGHT...Southwest winds 10 to 15 knots becoming south. Waves 1 to 3 feet. .MONDAY...South winds 10 to 15 knots becoming north less than 10 knots. Waves 2 feet or less. .TUESDAY...Northeast winds 5 to 15 knots. Waves 2 feet or less. .WEDNESDAY...Northeast winds 5 to 15 knots becoming southeast. Waves 1 to 3 feet. $$ LOZ061-170300- MAFOR 1621/ ONTARIO WEST 1/2 12730 13830 11820 11710 11700. A chance of rain early this evening. Waves 5 to 8 feet, and occasionally around 10 feet tonight. Waves 4 to 7 feet subsiding to 1 to 2 feet, and occasionally around 9 feet Saturday. ONTARIO EAST 1/2 12730 11830 11840 12830 11810 11700. A chance of rain early this evening. Waves 5 to 8 feet, and occasionally around 10 feet tonight. Waves 5 to 8 feet subsiding to 1 to 3 feet, and occasionally around 10 feet Saturday. $$