458
FZUS61 KBUF 302002
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM 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 central Great Lakes tonight
will remain in place through Sunday before drifting east across New
England Monday, then into the Canadian Maritimes Tuesday. A weaker
30.1 inch high will remain in place across the Great Lakes Tuesday
before drifting off the eastern seaboard Wednesday.

LOZ062-310300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Sat Aug 30 2025

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

$$

LOZ063>065-310300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EDT Sat Aug 30 2025

.TONIGHT...West winds 15 to 20 knots becoming northwest 5 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.SUNDAY...Northwest winds 10 knots or less becoming west. Waves
2 feet or less.
.SUNDAY NIGHT...West winds less than 10 knots. Waves 1 foot or
less.
.MONDAY...South winds less than 10 knots becoming northeast.
Waves 1 foot or less.
.MONDAY NIGHT...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 2 feet or
less building to 2 to 4 feet.
.THURSDAY...South winds 15 to 25 knots becoming southwest.
Showers likely. Waves 3 to 5 feet.

$$

LOZ061-310300-
MAFOR 3021/
ONTARIO WEST 1/2 11610 12710 13700 12600. Waves 2 to 4 feet
subsiding to 1 to 3 feet tonight. Waves 1 foot or less Sunday.

ONTARIO EAST 1/2 11620 11720 11710 13700 12600. Waves 3 to 5 feet
subsiding to 1 to 3 feet tonight. Waves 2 feet or less Sunday.

$$