886
FZUS61 KBUF 040803
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Sun Oct 4 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 29.7 inch low over northwest Ontario today will deepen
to 29.4 inches as it slides just south of James Bay over central
Quebec tonight, while sending a pair of cold fronts across the Lake.
A 30.2 inch high over the upper Midwest will then build across the
Great Lakes Monday into Tuesday, before sliding into the Northeast
Wednesday. A cold front will then pass across the lake Thursday.

LOZ062-041500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Sun Oct 4 2026

.TODAY...Southeast winds 5 to 10 knots becoming southwest. Waves
1 to 3 feet.
.TONIGHT...Southwest winds 10 to 15 knots becoming northwest
15 to 20 knots. Waves 1 to 2 feet building to 3 to 6 feet.
.MONDAY...Northwest winds to 30 knots. Waves 5 to 8 feet. Waves
occasionally around 10 feet.
.MONDAY NIGHT...Northwest winds 15 to 25 knots diminishing to
10 to 15 knots. Waves 3 to 6 feet subsiding to 1 to 3 feet.
.TUESDAY...Northwest winds 5 to 15 knots becoming southwest 15 to
20 knots. Waves 1 to 3 feet.
.WEDNESDAY...Southwest winds 15 to 20 knots becoming west 10 to
15 knots. Waves 3 to 5 feet subsiding to 2 to 4 feet.
.THURSDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 1 to 3 feet.

$$

LOZ063>065-041500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Sun Oct 4 2026

.TODAY...Southeast winds 15 to 20 knots becoming south. Waves
2 to 4 feet.
.TONIGHT...Southwest winds 10 to 15 knots becoming northwest and
increasing to 15 to 25 knots. A chance of showers from late
evening on. Waves 1 to 3 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.
.MONDAY...Northwest winds to 30 knots. Waves 5 to 8 feet building
to 6 to 10 feet. Waves occasionally around 13 feet.
.MONDAY NIGHT...Northwest winds 15 to 25 knots. Waves 5 to 8 feet
subsiding to 2 to 4 feet. Waves occasionally around 10 feet.
.TUESDAY...Northwest winds 5 to 15 knots becoming south 15 to
20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.WEDNESDAY...South winds 15 to 25 knots becoming west. A chance
of showers. Waves 3 to 5 feet subsiding to 2 to 4 feet.
.THURSDAY...West winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of showers. Waves 2 to 4 feet building to 3 to
5 feet, then subsiding to 1 to 3 feet.

$$

LOZ061-041500-
MAFOR 0409/
ONTARIO WEST 1/2 11310 12410 11500 11510 11520 11620 11730. Waves
1 to 3 feet today. Waves 2 feet or less building to 3 to 6 feet
tonight.

ONTARIO EAST 1/2 11320 13420 11410 11510 11620 11730. A chance of
showers overnight. Waves 1 to 3 feet building to 2 to 4 feet
today. Waves 1 to 3 feet building to 3 to 6 feet tonight.

$$