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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est thu dec 18 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 29.0 inch low near lake superior will deepen to 28.9 
inches while moving to central quebec by friday, with its trailing 
strong cold front crossing the lake early friday morning. in its 
wake, a 30.1 inch high will slowly build across the lake friday 
night and early saturday, then will drift off the atlantic coastline 
later saturday and saturday night, with a 29.5 inch low moving 
across ontario and quebec and pushing its attendant cold front 
across the lake sunday. a large 30.6 inch high will then build east 
across the lake monday.


loz062-191000-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm est thu dec 18 2025

...gale warning in effect from 7 am est friday through late
friday night...

.overnight...south winds to 30 knots. showers. waves 3 to
6 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.friday...west winds to 30 knots increasing to 40 knot gales.
rain showers early, then a chance of rain and snow showers late
in the morning. a chance of snow showers late. waves 5 to 8 feet
building to 13 to 17 feet. waves occasionally around 22 feet. 
.friday night...west gales to 40 knots diminishing to 30 knots. a
chance of snow showers in the evening. waves 12 to 17 feet
subsiding to 8 to 11 feet. waves occasionally around 22 feet. 
.saturday...west winds 15 to 25 knots becoming south. waves 4 to
7 feet subsiding to 3 to 5 feet. waves occasionally around
9 feet. 
.saturday night...southwest winds 15 to 25 knots becoming west
and increasing to 35 knot gales overnight. a chance of rain
showers. waves 5 to 8 feet building to 9 to 12 feet. waves
occasionally around 15 feet. 
.sunday...west gales to 35 knots becoming northwest and
diminishing to 15 to 20 knots. a chance of snow showers sunday
night. waves 10 to 14 feet subsiding to 4 to 7 feet. waves
occasionally around 18 feet. 
.monday...west winds 10 to 15 knots becoming south. a chance of
snow showers monday night. waves 2 to 4 feet subsiding to 1 to
2 feet. 
.tuesday...southwest winds 15 to 20 knots becoming northwest. a
chance of rain and snow showers during the day. waves 2 to 4 feet
building to 3 to 5 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est thu dec 18 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 29.0 inch low near lake superior will deepen to 28.9 
inches while moving to central quebec by friday, with its trailing 
strong cold front crossing the lake early friday morning. in its 
wake, a 30.1 inch high will slowly build across the lake friday 
night and early saturday, then will drift off the atlantic coastline 
later saturday and saturday night, with a 29.5 inch low moving 
across ontario and quebec and pushing its attendant cold front 
across the lake sunday. a large 30.6 inch high will then build east 
across the lake monday.


loz063-191000-
lake ontario open waters from hamlin beach to sodus bay-
1002 pm est thu dec 18 2025

...gale warning in effect from 7 am est friday through late
friday night...

.overnight...south winds to 30 knots. showers. waves 5 to
8 feet. waves occasionally around 10 feet. 
.friday...southwest winds to 30 knots becoming west and
increasing to 40 knot gales in the afternoon. rain showers early,
then rain likely late in the morning. a chance of snow showers
late. waves 5 to 8 feet building to 15 to 19 feet. waves
occasionally around 24 feet. 
.friday night...west gales to 40 knots diminishing to 30 knots. a
chance of snow showers in the evening. waves 15 to 20 feet
subsiding to 11 to 15 feet. waves occasionally around 26 feet. 
.saturday...west winds 15 to 20 knots becoming south. waves 6 to
9 feet subsiding to 2 to 4 feet. waves occasionally around
11 feet. 
.saturday night...south winds 15 to 25 knots becoming west and
increasing to 35 knot gales overnight. a chance of rain showers
in the evening, then a chance of rain and snow showers overnight.
waves 3 to 6 feet building to 10 to 13 feet. waves occasionally
around 16 feet. 
.sunday...west gales to 40 knots becoming northwest and
diminishing to 15 to 25 knots. a chance of snow showers. waves
13 to 17 feet subsiding to 6 to 9 feet. waves occasionally around
22 feet. 
.monday...northwest winds 15 to 20 knots becoming south. a chance
of snow showers monday night. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.tuesday...south winds 15 to 20 knots becoming northwest. a
chance of rain and snow showers during the day, then a chance of
rain showers tuesday night. waves 2 to 4 feet building to 4 to
7 feet. waves occasionally around 9 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est thu dec 18 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 29.0 inch low near lake superior will deepen to 28.9 
inches while moving to central quebec by friday, with its trailing 
strong cold front crossing the lake early friday morning. in its 
wake, a 30.1 inch high will slowly build across the lake friday 
night and early saturday, then will drift off the atlantic coastline 
later saturday and saturday night, with a 29.5 inch low moving 
across ontario and quebec and pushing its attendant cold front 
across the lake sunday. a large 30.6 inch high will then build east 
across the lake monday.


loz064-065-191000-
lake ontario open waters from sodus bay to the saint lawrence
river-
1002 pm est thu dec 18 2025

...gale warning in effect from 7 am est friday through late
friday night...

.overnight...southeast winds to 30 knots becoming south.
showers. waves 5 to 9 feet. waves occasionally around 11 feet. 
.friday...southwest winds to 30 knots becoming west and
increasing to 45 knot gales in the afternoon. rain in the
morning, then a chance of snow showers and rain in the afternoon.
waves 6 to 9 feet building to 15 to 20 feet. waves occasionally
around 26 feet. 
.friday night...west gales to 45 knots diminishing to 30 knots. a
chance of snow showers. waves 16 to 21 feet subsiding to 11 to
15 feet. waves occasionally around 27 feet. 
.saturday...west winds 15 to 25 knots becoming south. waves 7 to
10 feet subsiding to 3 to 6 feet. waves occasionally around
13 feet. 
.saturday night...south winds to 30 knots becoming southwest and
increasing to 35 knot gales overnight. a chance of rain showers
in the evening, then a chance of rain and snow showers overnight.
waves 3 to 6 feet building to 10 to 13 feet. waves occasionally
around 16 feet. 
.sunday...west gales to 40 knots becoming northwest and
diminishing to 15 to 25 knots. lake effect snow showers likely.
waves 12 to 17 feet subsiding to 7 to 10 feet. waves occasionally
around 22 feet. 
.monday...northwest winds 15 to 20 knots becoming south. a chance
of snow showers monday night. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.tuesday...south winds 15 to 25 knots becoming northwest. rain
and snow showers likely during the day, then a chance of rain
showers tuesday night. waves 3 to 6 feet building to 4 to 7 feet.
waves occasionally around 9 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
944 pm est thu dec 18 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...
low pressure of 29.20 inches over lake superior will slowly move 
northeast towards james bay tonight, pulling a cold front east 
across lake erie. a trough averaging 29.90 inches will linger over
lake erie on friday followed by a ridge of 30.10 inches expanding
north towards the lake friday night. another warm front will lift
north across lake erie saturday, followed by a cold front 
sweeping east across the lake saturday night. behind the front, a
ridge averaging 30.20 inches should build from the upper midwest 
through sunday night and then exit slowly eastward from lake erie 
on monday. another low pressure system of 29.70 inches will pass
north of lake erie on tuesday.


lez061-168-169-190915-
ripley to buffalo ny extending from 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-
944 pm est thu dec 18 2025

...gale warning in effect from 7 am est friday through friday
evening...

.rest of tonight...south winds to 30 knots becoming southwest. a
chance of rain late this evening, then rain after midnight. waves
5 to 9 feet. waves occasionally around 11 feet. 
.friday...west gales to 35 knots increasing to 40 knots. a chance
of rain and snow early, then snow likely from late morning on.
waves 10 to 14 feet building to 12 to 16 feet. waves occasionally
around 20 feet. 
.friday night...west gales to 40 knots diminishing to 15 to
20 knots overnight. a chance of snow in the evening. waves 12 to
16 feet subsiding to 5 to 7 feet. waves occasionally around
20 feet. 
.saturday...southwest winds 15 to 25 knots becoming south. waves
3 to 6 feet. 
.saturday night...southwest winds to 30 knots becoming west.
waves 5 to 9 feet building to 8 to 11 feet. waves occasionally
around 14 feet. 
.sunday...west winds to 30 knots diminishing to 15 to 25 knots.
waves 7 to 11 feet subsiding to 3 to 5 feet. waves occasionally
around 14 feet. 
.monday...west winds 10 to 15 knots becoming south 15 to
20 knots. a chance of rain monday night. waves 1 to 3 feet. 
.tuesday...southwest winds 15 to 25 knots becoming northwest and
diminishing to 10 to 15 knots. a chance of rain during the day.
waves 3 to 6 feet building to 4 to 7 feet, then subsiding to 2 to
4 feet. waves occasionally around 9 feet. 

$$