720
FZUS61 KBUF 060302
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EST Fri Dec 5 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 30.1 inch high centered along the New England
coastline this evening will push off the coast overnight. Another
cold front will cross the lake Saturday night, while its associated
29.2 inch low remains stationary over Hudson Bay. A weak 30.0 inch
surface low and trough will cross the lake on Sunday afternoon and
evening. Another 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 will approach the region Tuesday night and potentially
move northwest of the Lake Wednesday.

LOZ062-061000-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EST Fri Dec 5 2025

.OVERNIGHT...Southwest winds 15 to 20 knots. Waves 2 to
4 feet building to 3 to 6 feet.
.SATURDAY...Southwest winds 15 to 25 knots becoming west. A
chance of snow showers early, then lake effect snow showers
likely late in the morning. A chance of snow showers early in the
afternoon. Waves 3 to 6 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.
.SATURDAY NIGHT...West winds 15 to 20 knots becoming north 5 to
15 knots. Waves 4 to 7 feet subsiding to 1 to 3 feet. Waves
occasionally around 9 feet.
.SUNDAY...East winds 5 to 15 knots becoming northeast. A chance
of snow showers in the morning, then snow in the afternoon. Waves
1 to 3 feet.
.SUNDAY NIGHT...North winds 15 to 20 knots. Snow in the evening,
then a chance of snow showers overnight. Waves 2 to 4 feet.
.MONDAY...North winds 15 to 20 knots becoming south 5 to
15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots becoming southwest. Snow
showers during the day, then snow showers with rain showers
likely Tuesday night. Waves 3 to 6 feet building to 5 to 8 feet,
then subsiding to 3 to 6 feet. Waves occasionally around 10 feet.
.WEDNESDAY...South winds 15 to 25 knots becoming west. Rain and
snow showers. Waves 3 to 6 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.

$$

LOZ063-061000-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
1002 PM EST Fri Dec 5 2025

.OVERNIGHT...Southwest winds 15 to 20 knots. Waves 1 to
3 feet building to 2 to 4 feet.
.SATURDAY...Southwest winds 15 to 25 knots becoming west. A
chance of snow showers through early afternoon, then a chance of
rain and snow showers late. Waves 2 to 4 feet building to 5 to
8 feet. Waves occasionally around 10 feet.
.SATURDAY NIGHT...West winds 15 to 20 knots becoming north 10 to
15 knots. Waves 5 to 8 feet subsiding to 2 to 4 feet. Waves
occasionally around 10 feet.
.SUNDAY...Northeast winds 5 to 15 knots. A chance of snow showers
in the morning, then snow in the afternoon. Waves 2 to 3 feet.
.SUNDAY NIGHT...North winds 15 to 20 knots. Snow in the evening,
then a chance of snow showers overnight. Waves 2 to 4 feet
building to 3 to 6 feet.
.MONDAY...North winds 15 to 20 knots becoming southwest 10 to
15 knots. A chance of snow showers during the day. Waves 3 to
5 feet subsiding to 2 to 4 feet.
.TUESDAY...South winds 15 to 20 knots becoming southwest. Snow
showers likely during the day, then snow and rain showers likely
Tuesday night. Waves 3 to 6 feet.
.WEDNESDAY...South winds 15 to 25 knots becoming west. Rain and
snow showers. Waves 3 to 5 feet building to 4 to 7 feet. Waves
occasionally around 9 feet.

$$

LOZ064-065-061000-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
1002 PM EST Fri Dec 5 2025

.OVERNIGHT...South winds 15 to 20 knots. A chance of snow
showers late. Waves 2 to 4 feet building to 3 to 5 feet.
.SATURDAY...South winds 15 to 25 knots becoming southwest. A
chance of snow showers in the morning, then lake effect snow
showers likely early in the afternoon. Lake effect snow and rain
showers likely late. Waves 3 to 6 feet building to 5 to 8 feet.
Waves occasionally around 10 feet.
.SATURDAY NIGHT...West winds 15 to 25 knots becoming north and
diminishing to 10 to 15 knots. A chance of snow and rain showers
in the evening, then a chance of snow showers overnight. Waves
5 to 8 feet subsiding to 2 to 4 feet. Waves occasionally around
10 feet.
.SUNDAY...Northeast winds 5 to 15 knots. A chance of snow showers
in the morning, then snow in the afternoon. Waves 1 to 3 feet.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots becoming north
15 to 20 knots. Snow. Waves 1 to 3 feet building to 3 to 6 feet.
.MONDAY...North winds 15 to 20 knots becoming south 5 to
15 knots. A chance of snow showers during the day. Waves 3 to
5 feet subsiding to 2 to 4 feet.
.TUESDAY...South winds 15 to 25 knots becoming southwest 15 to
20 knots. Snow showers likely during the day, then snow showers
Tuesday night. Waves 3 to 6 feet building to 5 to 8 feet. Waves
occasionally around 10 feet.
.WEDNESDAY...South winds 15 to 25 knots becoming southwest to
30 knots. Rain and snow showers. Waves 3 to 6 feet building to
4 to 7 feet. Waves occasionally around 9 feet.

$$

LOZ061-061000-
MAFOR 0604/
ONTARIO WEST 1/2 12520 13530 11630 12620. A chance of snow
showers Saturday. Waves 2 to 4 feet building to 3 to 6 feet
overnight. Waves 3 to 6 feet building to 4 to 7 feet, and
occasionally around 9 feet Saturday. Waves 4 to 7 feet subsiding
to 3 to 6 feet, and occasionally around 9 feet Saturday evening.

ONTARIO EAST 1/2 13520 13530 11630 11620. A chance of snow
showers Saturday morning, then a chance of lake effect snow and
rain showers Saturday afternoon. A chance of rain and snow
showers Saturday evening. Waves 2 to 4 feet building to 3 to 5
feet overnight. Waves 3 to 6 feet building to 5 to 8 feet, and
occasionally around 10 feet Saturday. Waves 5 to 8 feet, and
occasionally around 10 feet Saturday evening.

$$