332
FZUS61 KBUF 292355
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
655 PM EST Mon Dec 29 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...Low pressure averaging 29.0 inches over Georgian Bay
will move to northern New England and southern Quebec today, then to
the Canadian Maritimes by Tuesday while deepening to 28.8 inches. A
trough averaging 29.7 inches, will drop southward across the Lake
Thursday and linger through Friday.

LOZ062-300400-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
655 PM EST Mon Dec 29 2025

...GALE WARNING IN EFFECT THROUGH TUESDAY MORNING...

.TONIGHT...West gales to 45 knots diminishing to 35 knots. Lake
effect snow showers likely. Waves 18 to 23 feet subsiding to
14 to 18 feet. Waves occasionally around 29 feet.
.TUESDAY...West gales to 35 knots. Snow showers likely through
early afternoon, then a chance of snow showers late. Waves 13 to
17 feet subsiding to 10 to 15 feet. Waves occasionally around
22 feet.
.TUESDAY NIGHT...West gales to 35 knots diminishing to 30 knots.
Lake effect snow showers. Waves 10 to 14 feet subsiding to 7 to
10 feet. Waves occasionally around 18 feet.
.WEDNESDAY...West winds 15 to 25 knots. Lake effect snow showers.
Waves 7 to 10 feet. Waves occasionally around 13 feet.
.WEDNESDAY NIGHT...Northwest winds 20 to 25 knots becoming west.
Snow showers. Waves 7 to 10 feet subsiding to 3 to 6 feet. Waves
occasionally around 13 feet.
.THURSDAY...West winds 20 to 25 knots. Snow showers likely. Waves
3 to 6 feet.
.FRIDAY...West winds 15 to 25 knots. A chance of snow showers
during the day. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves
occasionally around 9 feet.
.SATURDAY...Northwest winds 10 to 15 knots. A chance of snow
showers. Waves 2 to 4 feet.

$$

LOZ063-300400-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
655 PM EST Mon Dec 29 2025

...GALE WARNING IN EFFECT THROUGH TUESDAY EVENING...

.TONIGHT...West gales to 45 knots diminishing to 40 knots. Lake
effect snow showers. Waves 19 to 24 feet subsiding to 17 to
22 feet. Waves occasionally around 31 feet.
.TUESDAY...Northwest gales to 35 knots becoming west to 40 knots.
Lake effect snow showers likely. Waves 16 to 21 feet subsiding to
14 to 19 feet. Waves occasionally around 27 feet.
.TUESDAY NIGHT...West gales to 40 knots diminishing to 30 knots.
Lake effect snow showers likely in the evening, then lake effect
snow showers overnight. Waves 14 to 18 feet subsiding to 9 to
12 feet. Waves occasionally around 23 feet.
.WEDNESDAY...West winds 15 to 25 knots. Lake effect snow showers.
Waves 8 to 12 feet. Waves occasionally around 15 feet.
.WEDNESDAY NIGHT...Northwest winds 20 to 25 knots. Snow showers.
Waves 9 to 12 feet subsiding to 5 to 8 feet. Waves occasionally
around 15 feet.
.THURSDAY...West winds 20 to 25 knots. Lake effect snow showers.
Waves 3 to 6 feet.
.FRIDAY...West winds 15 to 25 knots. Snow showers likely during
the day, then a chance of snow showers Friday night. Waves 5 to
8 feet. Waves occasionally around 10 feet.
.SATURDAY...Northwest winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of snow showers. Waves 3 to 6 feet subsiding
to 2 to 4 feet.

$$

LOZ064-300400-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
655 PM EST Mon Dec 29 2025

...GALE WARNING IN EFFECT THROUGH TUESDAY EVENING...

.TONIGHT...Southwest gales to 45 knots becoming west to 40 knots.
Snow showers. Waves 20 to 25 feet subsiding to 17 to 22 feet.
Waves occasionally around 32 feet.
.TUESDAY...West gales to 35 knots increasing to 40 knots. Snow
showers likely. Waves 16 to 21 feet subsiding to 14 to 19 feet.
Waves occasionally around 27 feet.
.TUESDAY NIGHT...West gales to 40 knots diminishing to 30 knots.
Snow showers likely in the evening, then lake effect snow showers
overnight. Waves 15 to 19 feet subsiding to 9 to 13 feet. Waves
occasionally around 24 feet.
.WEDNESDAY...West winds 15 to 25 knots. Lake effect snow showers.
Waves 8 to 12 feet. Waves occasionally around 15 feet.
.WEDNESDAY NIGHT...Northwest winds 20 to 25 knots. Snow showers.
Waves 9 to 12 feet subsiding to 3 to 6 feet. Waves occasionally
around 15 feet.
.THURSDAY...Northwest winds 20 to 25 knots becoming west. Lake
effect snow showers. Waves 3 to 6 feet.
.FRIDAY...West winds 15 to 25 knots. Lake effect snow showers.
Waves 5 to 8 feet. Waves occasionally around 10 feet.
.SATURDAY...Northwest winds 15 to 20 knots becoming north 10 to
15 knots. Snow showers likely during the day, then a chance of
snow showers Saturday night. Waves 3 to 6 feet.

$$

LOZ065-300400-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence
River-
655 PM EST Mon Dec 29 2025

...GALE WARNING IN EFFECT THROUGH TUESDAY EVENING...

.TONIGHT...Southwest gales to 45 knots becoming west to 40 knots.
Snow showers. Waves 18 to 23 feet subsiding to 15 to 20 feet.
Waves occasionally around 29 feet.
.TUESDAY...West gales to 35 knots increasing to 40 knots. Snow
showers likely early, then a chance of snow showers from late
morning on. Waves 14 to 18 feet subsiding to 13 to 17 feet. Waves
occasionally around 23 feet.
.TUESDAY NIGHT...West gales to 40 knots diminishing to 30 knots.
A chance of snow showers. Waves 13 to 17 feet subsiding to 7 to
11 feet. Waves occasionally around 22 feet.
.WEDNESDAY...Northwest winds 15 to 20 knots. Lake effect snow
showers. Waves 7 to 11 feet. Waves occasionally around 14 feet.
.WEDNESDAY NIGHT...Northwest winds 15 to 25 knots. Snow showers
in the evening, then snow showers likely overnight. Waves 8 to
11 feet subsiding to 2 to 4 feet. Waves occasionally around
14 feet.
.THURSDAY...Northwest winds 15 to 20 knots becoming west. Lake
effect snow showers. Waves 2 to 4 feet building to 3 to 6 feet.
.FRIDAY...West winds 15 to 25 knots becoming northwest. Lake
effect snow showers likely. Waves 3 to 6 feet building to 4 to
7 feet. Waves occasionally around 9 feet.
.SATURDAY...Northwest winds 10 to 15 knots becoming north. Snow
showers likely during the day, then a chance of snow showers
Saturday night. Waves 3 to 5 feet subsiding to 2 to 4 feet.

$$

LOZ061-300400-
MAFOR 3001 AMD/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...12657 14650 11650.
Waves 18 to 23 feet subsiding to 15 to 19 feet, and occasionally
around 29 feet tonight. Waves 13 to 18 feet subsiding to 12 to 16
feet, and occasionally around 23 feet Tuesday.

ONTARIO EAST 1/2...GALE WARNING IN EFFECT...11667 13657 11757
12650. Waves 20 to 25 feet subsiding to 17 to 22 feet, and
occasionally around 32 feet tonight. Waves 16 to 21 feet
subsiding to 14 to 19 feet, and occasionally around 27 feet
Tuesday.

$$