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open lake forecast for lake ontario
national weather service buffalo ny
402 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.


loz062-070400-
lake ontario open waters from the niagara river to hamlin beach-
402 pm est sat dec 6 2025

.tonight...west winds 15 to 20 knots becoming northeast 5 to
15 knots. waves 3 to 6 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. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 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.


loz063-070400-
lake ontario open waters from hamlin beach to sodus bay-
402 pm est sat dec 6 2025

.tonight...west winds 15 to 25 knots becoming north and
diminishing to 10 to 15 knots. a chance of snow showers late this
evening. waves 5 to 8 feet subsiding to 2 to 4 feet. waves
occasionally around 10 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. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 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.


loz064-065-070400-
lake ontario open waters from sodus bay to the saint lawrence
river-
402 pm est sat dec 6 2025

.tonight...west winds 15 to 25 knots becoming northeast and
diminishing to 10 to 15 knots. a chance of snow showers early,
then a chance of snow and rain showers late this evening. a
chance of snow showers after midnight. waves 5 to 8 feet
subsiding to 2 to 4 feet. waves occasionally around 10 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. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
323 pm est sat dec 6 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...
a frontal boundary will stall over lake erie tonight while a ridge 
of 30.10 inches builds east across the region. low pressure of
30.00 inches will weaken as it moves through the ohio valley on
sunday, pulling a cold front south across the area. high pressure
of 30.50 inches will enter the great lakes for monday. low 
pressure 29.60 inches will reach the northwest lakes on tuesday, 
quickly progressing east, as a stronger low 29.10 inches will 
cross the lakes on wednesday.


lez061-166>169-070345-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm 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-
323 pm est sat dec 6 2025

.tonight...west winds 15 to 20 knots becoming southwest 5 to
15 knots. a slight chance of snow early, then a chance of snow
from late evening on. waves 3 to 6 feet subsiding to 1 to 3 feet.
.sunday...southwest winds 5 to 15 knots becoming west 15 to
20 knots. a chance of snow early, then snow likely. a chance of
snow with a slight chance of rain late. waves 1 to 3 feet
building to 2 to 4 feet. 
.sunday night...northwest winds 15 to 20 knots becoming north. a
chance of snow in the evening. waves 3 to 6 feet. 
.monday...northeast winds 15 to 20 knots becoming east 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.monday night...southeast winds 5 to 15 knots becoming south and
increasing to 15 to 25 knots. waves 2 feet or less building to
3 to 6 feet. 
.tuesday...southwest gales to 35 knots. snow and rain likely
during the day, then rain tuesday night. waves 7 to 10 feet
building to 9 to 12 feet, then subsiding to 7 to 10 feet. waves
occasionally around 15 feet. 
.wednesday...southwest gales to 35 knots becoming west and
diminishing to 30 knots. rain during the day, then snow and rain
likely wednesday night. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.thursday...west winds 15 to 25 knots. a chance of snow. waves
5 to 8 feet. waves occasionally around 10 feet. 

$$