378
FZUS61 KBUF 300202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Sat Aug 29 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 high pressure ridge averaging 30.2 inches exits slowly
toward New England through Sunday before a weak cold front drifts
southward across Lake Ontario Sunday night. Behind the front, a
ridge averaging 30.1 inches builds from eastern Canada through
Tuesday. That ridge should exit eastward Tuesday night and allow a
warm front to sweep northward across Lake Ontario. A cold front
should sweep eastward across the lake late Wednesday. Behind the
cold front, a trough averaging 29.9 inches should linger over Lake
Ontario through Thursday.

LOZ062-300900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Sat Aug 29 2026

.OVERNIGHT...Southwest winds 5 to 10 knots. Waves 1 to
2 feet.
.SUNDAY...Southwest winds 5 to 10 knots becoming west. Showers
likely in the afternoon. Waves 1 foot or less.
.SUNDAY NIGHT...Southwest winds 10 knots or less becoming
southeast. Showers. Waves 1 foot or less.
.MONDAY...East winds 10 knots or less. A chance of showers in the
morning, then showers likely in the afternoon. Waves 1 foot or
less.
.MONDAY NIGHT...East winds 5 to 10 knots becoming southeast.
Showers likely. Waves 1 foot or less.
.TUESDAY...South winds 5 to 10 knots. Showers likely. Waves
1 foot or less.
.WEDNESDAY...South winds 5 to 10 knots becoming southwest.
Showers likely with a chance of thunderstorms. Waves 1 foot or
less.
.THURSDAY...West winds 5 to 10 knots becoming northwest. Showers
likely during the day, then a chance of showers Thursday night.
Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-300900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Sat Aug 29 2026

.OVERNIGHT...Southwest winds 10 to 15 knots. Waves 2 feet
or less.
.SUNDAY...Southwest winds 5 to 15 knots becoming west. A chance
of showers in the afternoon. Waves 2 feet or less.
.SUNDAY NIGHT...West winds 10 knots or less becoming northwest. A
chance of showers. Waves 2 feet or less.
.MONDAY...East winds less than 10 knots. A chance of showers in
the afternoon. Waves 1 foot or less.
.MONDAY NIGHT...East winds 10 knots or less becoming south.
Showers likely. Waves 1 foot or less.
.TUESDAY...South winds 5 to 10 knots. Showers likely. Waves
1 foot or less.
.WEDNESDAY...South winds 5 to 10 knots becoming southwest.
Showers likely with a chance of thunderstorms. Waves 2 feet or
less.
.THURSDAY...West winds 5 to 10 knots becoming northwest. Showers
likely during the day, then a chance of showers Thursday night.
Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-300900-
MAFOR 3003/
ONTARIO WEST 1/2 14500 12600 11500 11506. Waves 2 feet or less.

ONTARIO EAST 1/2 13510 12500 13600. A chance of showers Sunday
evening. Waves 2 feet or less.

$$