589
FZUS61 KBUF 300802
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Sat Aug 30 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 30.2 inch high over the Upper Great Lakes will
gradually settle across the lake through Labor Day, before drifting
off the mid-Atlantic coastline Tuesday and Wednesday.

LOZ062-301500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Sat Aug 30 2025

.TODAY...Northwest winds 10 to 15 knots becoming west 15 to
20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.TONIGHT...Northwest winds 5 to 15 knots becoming north. Waves
1 to 3 feet subsiding to 1 foot or less.
.SUNDAY...North winds less than 10 knots becoming west. Waves
1 foot or less.
.SUNDAY NIGHT...Light and variable winds. Waves 1 foot or less.
.MONDAY...Southeast winds less than 10 knots. Waves 1 foot or
less.
.TUESDAY...Southeast winds 10 knots or less becoming south. Waves
1 foot or less.
.WEDNESDAY...South winds 5 to 15 knots. Showers likely Wednesday
night. Waves 1 to 3 feet.

$$

LOZ063>065-301500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Sat Aug 30 2025

.TODAY...Northwest winds 10 to 15 knots becoming west 15 to
20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.TONIGHT...West winds 15 to 20 knots becoming north 5 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.SUNDAY...North winds less than 10 knots becoming west. Waves
1 foot or less.
.SUNDAY NIGHT...West winds less than 10 knots. Waves 1 foot or
less.
.MONDAY...Light and variable winds. Waves 1 foot or less.
.TUESDAY...South winds 10 knots or less. Waves 1 foot or less.
.WEDNESDAY...South winds 5 to 15 knots increasing to 15 to
20 knots. A chance of showers Wednesday night. Waves 1 to 3 feet.

$$

LOZ061-301500-
MAFOR 3009/
ONTARIO WEST 1/2 12710 11610 12620 12710 11800. Waves 1 to 3 feet
building to 2 to 4 feet today. Waves 2 to 4 feet subsiding to 1
to 3 feet tonight.

ONTARIO EAST 1/2 12710 11610 13620 11700 11800. Waves 1 to 3 feet
building to 2 to 4 feet today. Waves 3 to 5 feet subsiding to 1
to 3 feet tonight.

$$