020
FZUS61 KBUF 250202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Mon Aug 24 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 ridge averaging 30.1 inches will build from the
western and central Great Lakes Tuesday through Wednesday. The ridge
will exit eastward Thursday and allow a warm front to sweep
northeastward across Lake Ontario. Friday, a cold front should sweep
eastward across the lake and be followed by a high pressure ridge
averaging 30.0 inches and building from the upper Midwest.

LOZ062-250900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Mon Aug 24 2026

.REST OF TONIGHT...West winds 15 to 20 knots. A chance of
waterspouts. A chance of showers. Waves 2 to 4 feet.
.TUESDAY...Northwest winds 15 to 20 knots becoming west 5 to
15 knots. Waves 1 to 3 feet.
.TUESDAY NIGHT...West winds 10 knots or less becoming southwest.
Waves 2 feet or less.
.WEDNESDAY...South winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots becoming south.
A chance of showers overnight. Waves 2 feet or less.
.THURSDAY...Southwest winds 5 to 15 knots becoming northwest.
Showers likely with a chance of thunderstorms during the day,
then a chance of showers and thunderstorms Thursday night. Waves
1 to 2 feet.
.FRIDAY...Northwest winds 5 to 10 knots becoming north. Waves
1 foot or less.
.SATURDAY...North winds 10 knots or less becoming south. Waves
1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-250900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Mon Aug 24 2026

.REST OF TONIGHT...West winds 15 to 20 knots. A chance of
waterspouts. Showers with a chance of thunderstorms late this
evening, then showers likely after midnight. Waves 3 to 6 feet.
.TUESDAY...Northwest winds 15 to 20 knots becoming west 10 to
15 knots. A chance of waterspouts early. A chance of showers in
the morning. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.TUESDAY NIGHT...West winds 5 to 15 knots. Waves 1 to 3 feet
subsiding to 1 foot or less.
.WEDNESDAY...Southwest winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots becoming south
15 to 20 knots. Waves 1 foot or less building to 1 to 3 feet.
.THURSDAY...South winds 15 to 20 knots becoming west 5 to
15 knots. Showers likely with a chance of thunderstorms. Waves
1 to 3 feet subsiding to 1 foot or less.
.FRIDAY...Northwest winds 5 to 10 knots becoming north. Waves
1 foot or less.
.SATURDAY...North winds 10 knots or less becoming south. Waves
1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-250900-
MAFOR 2503/
ONTARIO WEST 1/2 12620 11720 12710 12610 11600. A chance of
waterspouts overnight. A chance of showers overnight. Waves 3 to
5 feet overnight. Waves 2 to 4 feet subsiding to 1 to 3 feet
Tuesday. Waves 2 feet or less Tuesday evening.

ONTARIO EAST 1/2 11626 12620 12710 12610 11600. A chance of
waterspouts overnight and Tuesday morning. Waves 3 to 6 feet
overnight. Waves 3 to 5 feet subsiding to 1 to 3 feet Tuesday.
Waves 1 to 3 feet Tuesday evening.

$$