205
FZUS61 KBUF 070302
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EST Sat Dec 6 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 cold front will cross the lake tonight, while its
associated 29.2 inch low remains stationary near 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 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.

LOZ062-071000-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EST Sat Dec 6 2025

.REST OF TONIGHT...Northwest winds 15 to 20 knots becoming
northeast 5 to 15 knots. Waves 3 to 5 feet subsiding to 1 to
3 feet.
.SUNDAY...East winds 5 to 15 knots. Snow showers. Waves 1 to
2 feet.
.SUNDAY NIGHT...North winds 15 to 20 knots. Snow showers in the
evening, then a chance of snow showers overnight. Waves 2 to
4 feet.
.MONDAY...North winds 15 to 20 knots becoming northwest 5 to
15 knots. Waves 2 to 4 feet subsiding to 2 feet or less.
.MONDAY NIGHT...Southwest winds 5 to 15 knots becoming south
15 to 20 knots. Waves 1 to 3 feet.
.TUESDAY...South winds to 30 knots becoming southwest and
diminishing to 15 to 20 knots. Snow showers likely during the
day, then rain with a chance of snow 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 northwest. Rain
with a chance of snow during the day, then snow and rain showers
likely Wednesday night. Waves 3 to 6 feet building to 4 to
7 feet. Waves occasionally around 9 feet.
.THURSDAY...Northwest winds 15 to 20 knots. A chance of snow
showers. Waves 3 to 6 feet.

$$

LOZ063-071000-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
1002 PM EST Sat Dec 6 2025

.REST OF TONIGHT...Northwest winds 15 to 20 knots becoming north
10 to 15 knots. A chance of snow showers. Waves 3 to 6 feet
subsiding to 2 to 4 feet.
.SUNDAY...East winds 5 to 15 knots. A chance of snow showers in
the morning, then snow showers in the afternoon. Waves 1 to
3 feet.
.SUNDAY NIGHT...North winds 15 to 20 knots. Snow showers in the
evening, then a chance of snow showers overnight. Waves 1 to
3 feet building to 3 to 5 feet.
.MONDAY...North winds 15 to 20 knots becoming northwest and
diminishing to 5 to 10 knots. A chance of snow showers in the
morning. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.MONDAY NIGHT...West winds 5 to 15 knots becoming south 15 to
20 knots. Waves 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots becoming southwest. Snow
showers likely during the day, then rain with a chance of snow
Tuesday night. Waves 3 to 6 feet.
.WEDNESDAY...South winds 15 to 25 knots becoming west. Rain with
a chance of snow during the day, then rain and snow showers
likely Wednesday night. Waves 3 to 6 feet building to 5 to
8 feet. Waves occasionally around 10 feet.
.THURSDAY...West winds 15 to 25 knots. A chance of snow showers.
Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally
around 9 feet.

$$

LOZ064-065-071000-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
1002 PM EST Sat Dec 6 2025

.REST OF TONIGHT...Northwest winds 15 to 20 knots becoming
northeast 10 to 15 knots. A chance of snow showers late this
evening. Waves 4 to 7 feet subsiding to 2 to 4 feet. Waves
occasionally around 9 feet.
.SUNDAY...Northeast winds 5 to 15 knots becoming east. A chance
of snow showers in the morning, then snow showers in the
afternoon. Waves 1 to 3 feet.
.SUNDAY NIGHT...Northeast winds 15 to 20 knots becoming north.
Snow showers. Waves 1 to 3 feet building to 3 to 5 feet.
.MONDAY...North winds 15 to 20 knots becoming northwest and
diminishing to 5 to 10 knots. A chance of snow showers in the
morning. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.MONDAY NIGHT...West winds 5 to 15 knots becoming south 15 to
20 knots. Waves 1 to 3 feet.
.TUESDAY...South winds to 30 knots becoming southwest 15 to
25 knots. Snow showers likely during the day, then rain and snow
Tuesday night. Waves 3 to 6 feet building to 5 to 9 feet. Waves
occasionally around 11 feet.
.WEDNESDAY...South winds 20 to 25 knots becoming west. Rain and
snow during the day, then rain and snow showers Wednesday night.
Waves 3 to 6 feet building to 5 to 8 feet. Waves occasionally
around 10 feet.
.THURSDAY...Northwest winds 15 to 25 knots. Snow showers likely.
Waves 5 to 8 feet subsiding to 3 to 6 feet. Waves occasionally
around 10 feet.

$$

LOZ061-071000-
MAFOR 0704/
ONTARIO WEST 1/2 11710 11810 11200 12307 11317 11827 11820. Waves
3 to 5 feet subsiding to 1 to 3 feet overnight. Waves 1 to 2 feet
Sunday. Waves 2 to 4 feet Sunday evening.

ONTARIO EAST 1/2 11720 11810 11110 11210 11207 11217 11117 11827.
Waves 3 to 6 feet subsiding to 2 to 4 feet overnight. Waves 1 to
3 feet Sunday. Waves 1 to 3 feet building to 2 to 4 feet Sunday
evening.

$$