043
FZUS61 KBUF 310203
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1003 PM EDT Sat May 30 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 30.2 inch high will remain in control over the entire
Great Lakes region through Sunday. A 29.8 inch low will push south
across southern Quebec and New England Sunday night, then off the
New England coast on Monday, while sending an attendant cold front
across the Lake Sunday night. Another 30.4 inch high centered over
Hudson Bay Monday night will then build south across the entire
Great Lakes region Tuesday and Wednesday, then into the Ohio Valley
and lower Great Lakes by Thursday.

LOZ062-310900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1003 PM EDT Sat May 30 2026

.OVERNIGHT...West winds 5 to 10 knots. Waves 1 foot or
less.
.SUNDAY...West winds 5 to 15 knots becoming southwest. Waves 1 to
2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots becoming northwest less
than 10 knots. Waves 2 feet or less.
.MONDAY...North winds less than 10 knots becoming east. Waves
1 foot or less.
.MONDAY NIGHT...East winds less than 10 knots. Waves 1 foot or
less.
.TUESDAY...Northwest winds 10 knots or less. Waves 1 foot or
less.
.WEDNESDAY...Northwest winds less than 10 knots becoming west.
Waves 1 foot or less.
.THURSDAY...West winds 5 to 15 knots becoming southwest. Waves
1 to 3 feet.

$$

LOZ063>065-310900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1003 PM EDT Sat May 30 2026

.OVERNIGHT...West winds 5 to 10 knots. Waves 1 to 2 feet.
.SUNDAY...West winds 10 to 15 knots increasing to 15 to 20 knots.
Waves 1 to 3 feet building to 2 to 4 feet.
.SUNDAY NIGHT...West winds 15 to 20 knots becoming northwest 5 to
15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.MONDAY...North winds 5 to 10 knots becoming northwest. Waves
1 foot or less.
.MONDAY NIGHT...Northwest winds 10 knots or less. Waves 1 foot or
less.
.TUESDAY...Northwest winds 10 knots or less becoming west. Waves
1 foot or less.
.WEDNESDAY...West winds 10 knots or less becoming southwest.
Waves 1 foot or less.
.THURSDAY...Southwest winds 5 to 10 knots. Waves 2 feet or less.

$$

LOZ061-310900-
MAFOR 3103/
ONTARIO WEST 1/2 13600 12610 11510 12610. Waves 2 feet or less
overnight. Waves 1 to 3 feet Sunday and Sunday evening.

ONTARIO EAST 1/2 12600 13610 12620 11610. Waves 1 to 2 feet
overnight. Waves 1 to 3 feet building to 2 to 4 feet Sunday.
Waves 2 to 4 feet Sunday evening.

$$