244
FZUS61 KBUF 102003
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EDT Thu Sep 10 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 30.0 inches builds from
the western Great Lakes through Friday, before exiting toward the
New England coast on Saturday. A warm front will sweep northeastward
across Lake Ontario Saturday evening through Saturday night before a
cold front sweeps eastward across Lake Ontario on Sunday. Behind the
cold front, a 30.1 inch ridge will slide eastward across the lake
through Monday. On Tuesday, the ridge should exit toward New England
and allow a warm front to sweep northeastward across Lake Ontario.

LOZ062-110300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Thu Sep 10 2026

.TONIGHT...Northwest winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 1 to 3 feet.
.FRIDAY...Northwest winds 10 knots or less becoming southwest.
Waves 1 foot or less.
.FRIDAY NIGHT...Southwest winds 10 knots or less becoming
southeast. Waves 1 foot or less.
.SATURDAY...South winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots becoming
southwest. Waves 1 foot or less.
.SUNDAY...West winds 10 to 15 knots becoming northwest. A chance
of showers Sunday night. Waves 1 to 2 feet.
.MONDAY...North winds 5 to 15 knots becoming southeast. Waves
1 to 3 feet.
.TUESDAY...South winds 15 to 20 knots becoming west 10 to
15 knots. A chance of showers during the day, then showers likely
Tuesday night. Waves 2 to 4 feet building to 3 to 5 feet, then
subsiding to 2 to 3 feet.

$$

LOZ063>065-110300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EDT Thu Sep 10 2026

.TONIGHT...Northwest winds 15 to 20 knots becoming north 10 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.FRIDAY...North winds 10 knots or less becoming west. Waves
2 feet or less.
.FRIDAY NIGHT...West winds 10 knots or less becoming south. Waves
1 foot or less.
.SATURDAY...Southeast winds 5 to 15 knots. Waves 2 feet or less.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots becoming
southwest 15 to 20 knots. A chance of showers. Waves 1 to 3 feet.
.SUNDAY...Southwest winds 10 to 15 knots becoming northwest 15 to
20 knots. A chance of showers. Waves 1 to 3 feet.
.MONDAY...North winds 5 to 15 knots becoming southeast 15 to
20 knots. Waves 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots becoming southwest. A
chance of showers during the day, then showers likely Tuesday
night. Waves 3 to 5 feet subsiding to 2 to 4 feet.

$$

LOZ061-110300-
MAFOR 1021/
ONTARIO WEST 1/2 11610 12720 11710 12700 11600 11500. Waves 2 to
4 feet subsiding to 1 to 3 feet tonight. Waves 2 feet or less
Friday.

ONTARIO EAST 1/2 11620 12720 11810 11800 11700 12600. Waves 3 to
5 feet subsiding to 1 to 3 feet tonight. Waves 2 feet or less
Friday.

$$