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open lake forecast for lake ontario
national weather service buffalo ny
402 pm est tue dec 2 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 29.3 inch surface low off the northeast coast this 
evening will deepen to 28.9 inches over southern atlantic canada by 
early wednesday morning before going out to sea. a 30.2 inch surface 
high will build across the ohio valley and lower great lakes later 
wednesday into thursday morning before pushing off the coast. a 
large 29.2 inch surface low near hudson bay will push its cold front 
across the lake wednesday night, with another 30.4 inch high 
building in its wake thursday night. the high will then quickly move 
east of the lake friday. another cold front will cross the lake late 
saturday and saturday night, this from a 29.3 inch low near northern 
james bay. then, another area of surface high pressure averaging 
30.3 inches will build eastward across the great lakes through 
sunday.


loz062-030400-
lake ontario open waters from the niagara river to hamlin beach-
402 pm est tue dec 2 2025

.tonight...north winds 5 to 15 knots becoming west. waves 1 to
3 feet subsiding to 1 foot or less. 
.wednesday...southwest winds 10 to 15 knots increasing to
30 knots. a chance of snow showers late. waves 1 to 2 feet
building to 5 to 8 feet. waves occasionally around 10 feet. 
.wednesday night...southwest winds to 30 knots becoming west.
lake effect snow showers. waves 6 to 9 feet. waves occasionally
around 11 feet. 
.thursday...west winds to 30 knots becoming northwest. lake
effect snow showers likely. waves 6 to 10 feet. waves
occasionally around 13 feet. 
.thursday night...northwest winds 15 to 20 knots becoming
southwest 10 to 15 knots. a chance of snow showers in the
evening. waves 4 to 7 feet subsiding to 2 to 3 feet. waves
occasionally around 9 feet. 
.friday...southwest winds 15 to 25 knots. a chance of snow
showers friday night. waves 3 to 6 feet subsiding to 2 to 4 feet.
.saturday...southwest winds 15 to 20 knots becoming northwest. a
chance of snow showers. waves 3 to 6 feet. 
.sunday...northwest winds 10 to 15 knots becoming north. a chance
of snow showers. waves 1 to 3 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 pm est tue dec 2 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 29.3 inch surface low off the northeast coast this 
evening will deepen to 28.9 inches over southern atlantic canada by 
early wednesday morning before going out to sea. a 30.2 inch surface 
high will build across the ohio valley and lower great lakes later 
wednesday into thursday morning before pushing off the coast. a 
large 29.2 inch surface low near hudson bay will push its cold front 
across the lake wednesday night, with another 30.4 inch high 
building in its wake thursday night. the high will then quickly move 
east of the lake friday. another cold front will cross the lake late 
saturday and saturday night, this from a 29.3 inch low near northern 
james bay. then, another area of surface high pressure averaging 
30.3 inches will build eastward across the great lakes through 
sunday.


loz063-030400-
lake ontario open waters from hamlin beach to sodus bay-
402 pm est tue dec 2 2025

.tonight...north winds 15 to 20 knots becoming west 5 to
15 knots. a chance of snow showers early. waves 1 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots increasing to 15 to
25 knots. a chance of snow showers early. waves 1 to 3 feet
building to 3 to 6 feet. 
.wednesday night...southwest winds to 30 knots becoming west.
lake effect snow showers in the evening, then lake effect snow
showers with lake effect rain showers likely overnight. waves
4 to 7 feet building to 6 to 10 feet. waves occasionally around
13 feet. 
.thursday...west winds to 30 knots becoming northwest. lake
effect snow showers. waves 8 to 11 feet building to 9 to 13 feet.
waves occasionally around 16 feet. 
.thursday night...northwest winds to 30 knots becoming southwest
and diminishing to 10 to 15 knots overnight. waves 7 to 10 feet
subsiding to 2 to 3 feet. waves occasionally around 13 feet. 
.friday...south winds 15 to 20 knots becoming southwest. waves
2 to 4 feet. 
.saturday...southwest winds 15 to 20 knots becoming west. a
chance of snow showers. waves 2 to 4 feet building to 4 to
7 feet, then subsiding to 3 to 6 feet. waves occasionally around
9 feet. 
.sunday...northwest winds 15 to 20 knots becoming north 10 to
15 knots. a chance of snow showers during the day. waves 3 to
5 feet subsiding to 1 to 3 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 pm est tue dec 2 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 29.3 inch surface low off the northeast coast this 
evening will deepen to 28.9 inches over southern atlantic canada by 
early wednesday morning before going out to sea. a 30.2 inch surface 
high will build across the ohio valley and lower great lakes later 
wednesday into thursday morning before pushing off the coast. a 
large 29.2 inch surface low near hudson bay will push its cold front 
across the lake wednesday night, with another 30.4 inch high 
building in its wake thursday night. the high will then quickly move 
east of the lake friday. another cold front will cross the lake late 
saturday and saturday night, this from a 29.3 inch low near northern 
james bay. then, another area of surface high pressure averaging 
30.3 inches will build eastward across the great lakes through 
sunday.


loz064-065-030400-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 pm est tue dec 2 2025

.tonight...north winds 15 to 20 knots becoming northwest 5 to
15 knots. waves 1 to 3 feet. 
.wednesday...southwest winds 5 to 15 knots increasing to 15 to
25 knots. a chance of snow showers in the morning. a chance of
snow showers late. waves 1 foot or less building to 3 to 6 feet. 
.wednesday night...southwest winds to 30 knots becoming west.
lake effect snow and rain showers. waves 5 to 9 feet building to
7 to 11 feet. waves occasionally around 14 feet. 
.thursday...west winds to 30 knots becoming northwest. lake
effect snow showers. waves 8 to 11 feet building to 9 to 13 feet.
waves occasionally around 16 feet. 
.thursday night...northwest winds to 30 knots becoming south and
diminishing to 10 to 15 knots overnight. a chance of snow showers
overnight. waves 8 to 11 feet subsiding to 1 to 3 feet. waves
occasionally around 14 feet. 
.friday...south winds 15 to 25 knots becoming southwest. a chance
of snow showers. waves 3 to 6 feet. 
.saturday...southwest winds 15 to 25 knots becoming northwest.
snow showers likely. waves 3 to 6 feet building to 4 to 7 feet,
then subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.sunday...northwest winds 15 to 20 knots becoming north 10 to
15 knots. snow showers likely during the day, then a chance of
snow showers sunday night. waves 3 to 5 feet subsiding to 1 to
3 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 pm est tue dec 2 2025


slz022-030400-
saint lawrence river from cape vincent to ogdensburg-
402 pm est tue dec 2 2025

.tonight...north winds 5 to 10 knots becoming light and variable.
mostly cloudy. 
.wednesday...south winds 10 knots or less becoming southwest
10 to 15 knots. a chance of snow showers in the afternoon. 
.wednesday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. lake effect snow showers. 
.thursday...west winds 10 to 15 knots becoming northwest. lake
effect snow showers likely. 
.thursday night...northwest winds 5 to 15 knots becoming south
less than 10 knots. mainly clear. 
.friday...south winds 5 to 15 knots. a chance of snow showers. 
.saturday...south winds 5 to 10 knots becoming west. snow showers
likely. 
.sunday...northwest winds less than 10 knots becoming north. a
chance of snow showers during the day. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
313 pm est tue dec 2 2025

for waters beyond five nautical miles of shore on lake erie

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...
high pressure 30.20 inches will build across the area late today
through wednesday. a trough averaging 29.90 inches will move a
cold front east late wednesday into thursday before high pressure
30.40 inches returns late thursday into friday. another low
pressure 29.70 inches will move a cold front east on saturday into
sunday.


lez061-167>169-030315-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
313 pm est tue dec 2 2025

.tonight...north winds 5 to 15 knots becoming west 15 to
20 knots. a slight chance of snow late. waves 1 to 3 feet
building to 2 to 4 feet. 
.wednesday...southwest winds 15 to 25 knots increasing to
30 knots. a slight chance of snow late. waves 3 to 6 feet
building to 6 to 10 feet. waves occasionally around 13 feet. 
.wednesday night...southwest winds to 30 knots becoming west.
snow. waves 6 to 10 feet. waves occasionally around 13 feet. 
.thursday...northwest winds to 30 knots diminishing to 15 to
25 knots. a chance of snow in the morning. waves 5 to 8 feet.
waves occasionally around 10 feet. 
.thursday night...northwest winds 15 to 20 knots becoming south.
waves 3 to 5 feet subsiding to 1 to 3 feet. 
.friday...southwest winds 15 to 20 knots. waves 3 to 6 feet. 
.saturday...southwest winds 15 to 25 knots becoming northwest and
diminishing to 10 to 15 knots. a chance of snow. waves 3 to
6 feet building to 4 to 7 feet, then subsiding to 2 to 4 feet.
waves occasionally around 9 feet. 
.sunday...northwest winds 5 to 15 knots becoming northeast. a
chance of snow. waves 1 to 3 feet. 

$$