798
FZUS61 KBUF 080302
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EST Sun Dec 7 2025

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 weak 29.9 inch surface low will slowly move east of
the lake through this evening. A 30.4 inch high will move across the
region Monday through Monday night, before moving off the east coast
Tuesday. A 29.5 inch low will move across the Upper Great Lakes
Tuesday, then a stronger low averaging 29.3 inches will approach the
region Tuesday night and potentially move northwest of the Lake
Wednesday. A 29.9 inch high is expected to move into the Great Lakes
region Thursday, followed by a 29.6 inch low which may approach the
lake from the northwest late Friday.

LOZ062-081000-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EST Sun Dec 7 2025

.OVERNIGHT...Northwest winds 15 to 25 knots becoming north.
Waves 3 to 6 feet.
.MONDAY...North winds 5 to 15 knots becoming west less than
10 knots. Waves 1 to 3 feet subsiding to 1 foot or less.
.MONDAY NIGHT...Southwest winds 5 to 15 knots becoming south.
Waves 2 feet or less.
.TUESDAY...South winds 15 to 25 knots becoming southwest to
30 knots. A chance of snow showers in the morning, then snow
showers in the afternoon. Waves 1 to 3 feet building to 5 to
9 feet. Waves occasionally around 11 feet.
.TUESDAY NIGHT...Southwest winds to 30 knots diminishing to 15 to
20 knots. Snow showers with a chance of rain showers in the
evening, then rain and snow overnight. Waves 5 to 9 feet
subsiding to 3 to 6 feet. Waves occasionally around 11 feet.
.WEDNESDAY...South winds to 30 knots becoming northwest. Rain and
snow during the day, then rain with a chance of snow Wednesday
night. Waves 5 to 8 feet. Waves occasionally around 10 feet.
.THURSDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. A chance of snow showers. Waves 3 to 6 feet subsiding
to 2 to 3 feet.
.FRIDAY...Northwest winds 15 to 20 knots becoming west. A chance
of snow showers. Waves 2 to 4 feet building to 3 to 5 feet.

$$

LOZ063-081000-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
1002 PM EST Sun Dec 7 2025

.OVERNIGHT...Northwest winds 15 to 25 knots becoming north.
Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally
around 9 feet.
.MONDAY...North winds 5 to 15 knots becoming northwest less than
10 knots. Waves 3 to 5 feet subsiding to 1 foot or less.
.MONDAY NIGHT...West winds 5 to 15 knots becoming south. Waves
1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots. Snow showers likely in the
afternoon. Waves 2 to 4 feet building to 3 to 6 feet.
.TUESDAY NIGHT...Southwest winds 15 to 25 knots. Snow and rain
showers likely in the evening, then rain and snow overnight.
Waves 3 to 6 feet building to 4 to 7 feet, then subsiding to 3 to
6 feet. Waves occasionally around 9 feet.
.WEDNESDAY...South winds to 30 knots becoming northwest. Rain and
snow. Waves 3 to 6 feet building to 6 to 10 feet. Waves
occasionally around 13 feet.
.THURSDAY...Northwest winds 15 to 25 knots. A chance of snow
showers. Waves 5 to 8 feet subsiding to 3 to 5 feet. Waves
occasionally around 10 feet.
.FRIDAY...Northwest winds 15 to 20 knots becoming west. A chance
of snow showers. Waves 3 to 6 feet.

$$

LOZ064-065-081000-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
1002 PM EST Sun Dec 7 2025

.OVERNIGHT...Northwest winds 15 to 25 knots becoming north.
Waves 3 to 6 feet building to 4 to 7 feet, then subsiding to 3 to
6 feet. Waves occasionally around 9 feet.
.MONDAY...North winds 15 to 20 knots becoming northwest and
diminishing to less than 10 knots in the afternoon. Waves 3 to
5 feet subsiding to 1 foot or less.
.MONDAY NIGHT...West winds 10 knots or less becoming south and
increasing to 15 to 20 knots overnight. Waves 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots increasing to 30 knots.
Snow showers likely in the afternoon. Waves 3 to 6 feet building
to 6 to 9 feet. Waves occasionally around 11 feet.
.TUESDAY NIGHT...South winds to 30 knots becoming southwest. Snow
and rain showers in the evening, then rain and snow overnight.
Waves 5 to 9 feet. Waves occasionally around 11 feet.
.WEDNESDAY...South winds to 30 knots becoming northwest. Rain and
snow. Waves 4 to 7 feet building to 6 to 10 feet. Waves
occasionally around 13 feet.
.THURSDAY...Northwest winds 15 to 25 knots. Snow showers likely.
Waves 5 to 8 feet subsiding to 2 to 4 feet. Waves occasionally
around 10 feet.
.FRIDAY...Northwest winds 15 to 20 knots. Snow showers likely.
Waves 3 to 6 feet.

$$

LOZ061-081000-
MAFOR 0804/
ONTARIO WEST 1/2 11730 11820 11810 12800 11700 11500 11400. Waves
3 to 6 feet overnight. Waves 2 to 4 feet subsiding to 1 foot or
less Monday. Waves 1 foot or less Monday evening.

ONTARIO EAST 1/2 11730 11830 11820 11810 11800 11700 11600 11500.
Waves 3 to 6 feet building to 4 to 7 feet, then subsiding to 3 to
6 feet, and occasionally around 9 feet overnight. Waves 3 to 5
feet subsiding to 1 foot or less Monday. Waves 1 foot or less
Monday evening.

$$