981
FZUS61 KBUF 310803
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
403 AM EDT Fri Jul 31 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 west
today before exiting slowly eastward Friday through Sunday. A cold
front should sweep southeastward across Lake Ontario Sunday night
through Monday morning. Behind the front, another ridge averaging
30.0 inches should build southeastward across Lake Ontario through
Tuesday.

LOZ062-311500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
403 AM EDT Fri Jul 31 2026

.TODAY...West winds 10 knots or less becoming southwest. Waves
1 foot or less.
.TONIGHT...South winds 10 knots or less becoming southwest. Waves
1 foot or less.
.SATURDAY...Southwest winds 10 knots or less becoming east. Waves
1 foot or less.
.SATURDAY NIGHT...East winds 5 to 10 knots. A chance of showers
in the evening, then showers overnight. Waves 1 foot or less.
.SUNDAY...East winds 5 to 10 knots becoming northwest. Showers
with a chance of thunderstorms. Waves 1 foot or less.
.MONDAY...Northwest winds 10 knots or less. Waves 2 feet or less.
.TUESDAY...Northeast winds 5 to 10 knots becoming east. Waves
1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-311500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
403 AM EDT Fri Jul 31 2026

.TODAY...West winds 5 to 10 knots. Waves 1 foot or less.
.TONIGHT...Southwest winds 10 knots or less becoming south. Waves
1 foot or less.
.SATURDAY...South winds 10 knots or less becoming east. Waves
1 foot or less.
.SATURDAY NIGHT...East winds 5 to 15 knots becoming southeast. A
chance of showers in the evening, then showers likely overnight.
Waves 1 foot or less.
.SUNDAY...Southeast winds 10 to 15 knots becoming southwest.
Showers with a chance of thunderstorms. Waves 2 feet or less.
.MONDAY...West winds 5 to 15 knots becoming northwest. A chance
of showers during the day. Waves 2 feet or less.
.TUESDAY...West winds 10 knots or less becoming southeast. Waves
1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-311500-
MAFOR 3109/
ONTARIO WEST 1/2 14600 13400 11500. Waves 1 foot or less.

ONTARIO EAST 1/2 14600 11500 13400. Waves 1 foot or less.

$$