727
FZUS61 KBUF 140202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Mon Oct 13 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 29.6 inch low will remain just offshore of the
Delmarva tonight. Meanwhile, a 30.5 inch high will remain in place
over the Canadian Maritimes. The east coast low will move east into
the Atlantic Tuesday, while a ridge of high pressure averaging 30.2
inches builds into the lower Great Lakes. A cold front will move
south across the lake Tuesday night. An expansive 30.3 inch high
will then build from the upper Great Lakes Wednesday to Quebec and
the lower Great Lakes Thursday through Friday.

LOZ062-140900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Mon Oct 13 2025

.OVERNIGHT...East winds 5 to 10 knots becoming northeast.
Waves 2 to 3 feet.
.TUESDAY...North winds 5 to 15 knots becoming west. Waves 1 to
2 feet.
.TUESDAY NIGHT...Northwest winds 15 to 20 knots becoming north.
Waves 2 to 4 feet building to 3 to 5 feet.
.WEDNESDAY...North winds 15 to 20 knots becoming northwest 10 to
15 knots. Waves 3 to 5 feet subsiding to 2 to 4 feet.
.WEDNESDAY NIGHT...Northwest winds 15 to 20 knots becoming north.
Waves 2 to 4 feet.
.THURSDAY...North winds 5 to 15 knots. Waves 1 to 3 feet.
.FRIDAY...West winds 10 knots or less becoming south. A chance of
showers Friday night. Waves 1 foot or less.
.SATURDAY...South winds 5 to 15 knots becoming southwest. A
chance of showers during the day, then showers likely Saturday
night. Waves 2 feet or less.

$$

LOZ063>065-140900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Mon Oct 13 2025

.OVERNIGHT...Northeast winds 5 to 15 knots. Waves 1 to
3 feet.
.TUESDAY...Northeast winds 5 to 15 knots becoming west. Waves
2 feet or less.
.TUESDAY NIGHT...West winds 15 to 25 knots becoming north. Waves
2 to 4 feet building to 4 to 7 feet. Waves occasionally around
9 feet.
.WEDNESDAY...North winds 15 to 25 knots. Waves 4 to 7 feet
subsiding to 2 to 4 feet. Waves occasionally around 9 feet.
.WEDNESDAY NIGHT...North winds 15 to 20 knots. Waves 2 to 4 feet
building to 3 to 5 feet.
.THURSDAY...North winds 15 to 20 knots diminishing to 5 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.FRIDAY...North winds 10 knots or less becoming south. A chance
of showers Friday night. Waves 1 foot or less.
.SATURDAY...South winds 10 to 15 knots. A chance of showers
during the day, then showers likely Saturday night. Waves 1 to
3 feet.

$$

LOZ061-140900-
MAFOR 1403/
ONTARIO WEST 1/2 11200 12100 11800 11700 11600 11610 11720. Waves
2 to 3 feet overnight. Waves 2 feet or less Tuesday. Waves 2 to 4
feet building to 3 to 5 feet Tuesday evening.

ONTARIO EAST 1/2 11110 12100 12800 11700 11610 11620. Waves 1 to
3 feet overnight. Waves 2 feet or less Tuesday. Waves 1 to 3 feet
building to 3 to 5 feet Tuesday evening.

$$