


Great Lakes Forecast
Issued by NWS
Issued by NWS
872 FZUS61 KBUF 032002 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 402 PM EDT Fri Oct 3 2025 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 large 30.3 inch high has settled south off the southern New England coast and this feature will remain anchored near the Mid Atlantic coast tomorrow through Monday. A cold front will then move east across the lower Great Lakes Tuesday or Tuesday night. This will be followed by a strong 30.4 inch high that will build from the upper Great Lakes Wednesday into the lower Great Lakes and Northeast by Thursday. LOZ062-040300- Lake Ontario open waters from the Niagara River to Hamlin Beach- 402 PM EDT Fri Oct 3 2025 .TONIGHT...Southeast winds 5 to 10 knots becoming southwest. Waves 1 foot or less. .SATURDAY...Southwest winds 10 knots or less becoming east. Waves 1 foot or less. .SATURDAY NIGHT...Southeast winds 10 knots or less becoming southwest. Waves 1 foot or less. .SUNDAY...Southwest winds 10 knots or less becoming southeast. Waves 1 foot or less. .SUNDAY NIGHT...Southeast winds 10 knots or less becoming southwest. Waves 1 foot or less. .MONDAY...Southwest winds 10 to 15 knots. Showers likely Monday night. Waves 1 to 3 feet. .TUESDAY...Southwest winds 10 to 15 knots becoming northwest 15 to 20 knots. Showers. Waves 1 to 3 feet building to 2 to 4 feet. .WEDNESDAY...North winds 15 to 20 knots becoming northeast 10 to 15 knots. A chance of showers during the day. Waves 2 to 4 feet subsiding to 1 to 3 feet. $$ LOZ063>065-040300- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 402 PM EDT Fri Oct 3 2025 .TONIGHT...Southeast winds 5 to 10 knots becoming southwest. Waves 1 foot or less. .SATURDAY...Southwest winds 10 knots or less becoming southeast. Waves 1 foot or less. .SATURDAY NIGHT...Southeast winds 10 knots or less becoming south. Waves 1 foot or less. .SUNDAY...South winds 10 knots or less becoming southeast. Waves 1 foot or less. .SUNDAY NIGHT...Southeast winds 5 to 15 knots becoming south. Waves 1 to 3 feet. .MONDAY...South winds 5 to 15 knots. A chance of showers Monday night. Waves 1 to 3 feet. .TUESDAY...Southwest winds 10 to 15 knots becoming northwest 15 to 20 knots. Showers. Waves 1 to 3 feet building to 3 to 5 feet. .WEDNESDAY...North winds 15 to 20 knots becoming northeast 10 to 15 knots. A chance of showers during the day. Waves 3 to 5 feet subsiding to 1 to 3 feet. $$ LOZ061-040300- MAFOR 0321/ ONTARIO WEST 1/2 11300 11400 14500 11600 11100. Waves 1 foot or less. ONTARIO EAST 1/2 11300 12400 14500 11600. Waves 1 foot or less. $$