730
FZUS61 KBUF 310202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 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.

LOZ062-310900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Sat Aug 30 2025

.OVERNIGHT...Northwest winds 10 to 15 knots. Waves 1 to
3 feet subsiding to 1 foot or less.
.SUNDAY...Northwest winds 10 knots or less becoming west. Waves
1 foot or less.
.SUNDAY NIGHT...Southwest winds less than 10 knots. 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>065-310900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Sat Aug 30 2025

.OVERNIGHT...Northwest winds 15 to 20 knots diminishing to
10 to 15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.SUNDAY...North winds 10 knots or less becoming west. Waves
2 feet or less.
.SUNDAY NIGHT...West winds 5 to 10 knots becoming light and
variable. 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.

$$

LOZ061-310900-
MAFOR 3103/
ONTARIO WEST 1/2 11710 13700 13600 11500. Waves 1 to 3 feet
overnight. Waves 1 foot or less Sunday and Sunday evening.

ONTARIO EAST 1/2 12710 12800 11700 13600. Waves 2 to 4 feet
subsiding to 1 to 3 feet overnight. Waves 2 feet or less Sunday
and Sunday evening.

$$