515
FZUS61 KBUF 030802
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Sat Oct 3 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 30.3 inch high will build east across the lower Great
Lakes region through Saturday, before sliding northeast into
northern New England Saturday night. A 29.7 inch low over
northwestern Ontario Sunday will deepen to 29.4 inches as it slides
just south of James Bay into central Quebec Sunday night, while
sending a pair of cold fronts across the Lake. A 30.2 inch high over
the upper Midwest will then build across the Great Lakes region
Monday into Tuesday, before sliding into the Northeast Wednesday.

LOZ062-031500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Sat Oct 3 2026

.TODAY...Northeast winds 5 to 10 knots becoming east. Waves 1 to
2 feet.
.TONIGHT...East winds 10 to 15 knots becoming southeast. Waves
2 feet or less.
.SUNDAY...Southeast winds 10 knots or less becoming southwest.
Waves 2 feet or less.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots becoming northwest
15 to 20 knots. Waves 2 feet or less building to 3 to 5 feet.
.MONDAY...West winds 15 to 25 knots becoming northwest. Waves
3 to 6 feet building to 4 to 7 feet, then subsiding to 3 to
5 feet. Waves occasionally around 9 feet.
.TUESDAY...Northwest winds 5 to 10 knots becoming southwest.
Waves 2 feet or less.
.WEDNESDAY...Southwest winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet.

$$

LOZ063>065-031500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Sat Oct 3 2026

.TODAY...Northeast winds 5 to 15 knots. Waves 1 to 3 feet
subsiding to 1 foot or less.
.TONIGHT...Northeast winds 5 to 15 knots becoming southeast.
Waves 2 feet or less.
.SUNDAY...Southeast winds 15 to 20 knots becoming south. Waves
1 to 3 feet building to 2 to 4 feet, then subsiding to 1 to
3 feet.
.SUNDAY NIGHT...South winds 15 to 20 knots becoming west. A
chance of showers overnight. Waves 1 to 3 feet building to 3 to
5 feet.
.MONDAY...Northwest winds to 30 knots diminishing to 15 to
20 knots. A chance of showers during the day. Waves 4 to 7 feet
building to 6 to 9 feet, then subsiding to 4 to 7 feet. Waves
occasionally around 11 feet.
.TUESDAY...Northwest winds 5 to 15 knots becoming southwest.
Waves 2 to 4 feet subsiding to 2 feet or less.
.WEDNESDAY...South winds 15 to 20 knots becoming southwest. Waves
1 to 3 feet building to 2 to 4 feet.

$$

LOZ061-031500-
MAFOR 0309/
ONTARIO WEST 1/2 11100 14200 11210 12310. Waves 1 to 3 feet
today. Waves 2 feet or less tonight.

ONTARIO EAST 1/2 11110 14100 12200 11300. Waves 2 to 4 feet
subsiding to 1 foot or less today. Waves 2 feet or less tonight.

$$