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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu sep 17 2026

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 weak front will move southeast and away from the lake 
overnight. a 30.3 inch high will build from northwest ontario friday 
to southern quebec saturday, then off the new england coast saturday 
night. a weak 29.9 inch low is then forecast to move east across 
ohio and pennsylvania late saturday night through sunday. another 
30.3 inch high will then build from northwest ontario sunday night 
to quebec by tuesday and wednesday while gradually strengthening to 
30.6 inches.


loz062-180900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt thu sep 17 2026

.overnight...northwest winds 10 to 15 knots becoming north.
waves 1 to 2 feet. 
.friday...north winds 5 to 15 knots diminishing to less than
10 knots. waves 2 feet or less. 
.friday night...north winds 5 to 15 knots becoming east 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet. 
.saturday...east winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday night...east winds 10 to 15 knots. a chance of showers
overnight. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
25 knots. a chance of showers during the day. waves 1 to 3 feet
building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots. waves 5 to 8 feet.
waves occasionally around 10 feet. 
.tuesday...northeast winds to 30 knots becoming east. a chance of
showers. waves 5 to 9 feet. waves occasionally around 11 feet. 

$$

fzus61 kbuf 180202
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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu sep 17 2026

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 weak front will move southeast and away from the lake 
overnight. a 30.3 inch high will build from northwest ontario friday 
to southern quebec saturday, then off the new england coast saturday 
night. a weak 29.9 inch low is then forecast to move east across 
ohio and pennsylvania late saturday night through sunday. another 
30.3 inch high will then build from northwest ontario sunday night 
to quebec by tuesday and wednesday while gradually strengthening to 
30.6 inches.


loz063>065-180900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt thu sep 17 2026

.overnight...northwest winds 5 to 15 knots becoming north.
waves 2 feet or less. 
.friday...north winds 10 to 15 knots. waves 1 to 3 feet. 
.friday night...north winds 10 to 15 knots becoming northeast.
waves 1 to 3 feet. 
.saturday...east winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday night...east winds 5 to 10 knots. a chance of showers
overnight. waves 2 feet or less. 
.sunday...east winds 10 to 15 knots becoming northeast and
increasing to 15 to 25 knots. a chance of showers during the day.
waves 1 to 3 feet building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots. waves 4 to 7 feet.
waves occasionally around 9 feet. 
.tuesday...northeast winds 15 to 25 knots becoming east. a chance
of 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 erie
national weather service cleveland oh
927 pm edt thu sep 17 2026

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 south into lake erie 
friday. low pressure 29.90 inches will track east across the great
lakes on saturday and extend a cold front through the area on 
sunday. a trough averaging 29.90 inches will linger behind the 
front into early next week.


lez061-168-169-180815-
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-
927 pm edt thu sep 17 2026

.overnight...northwest winds 5 to 15 knots becoming
northeast. waves 2 feet or less. 
.friday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.friday night...northeast winds 10 to 15 knots becoming east.
waves 1 to 3 feet. 
.saturday...east winds 5 to 15 knots. waves 2 feet or less. 
.saturday night...east winds 5 to 15 knots. showers likely in the
evening, then showers overnight. waves 2 feet or less. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
25 knots. a chance of showers during the day. waves 1 to 3 feet
building to 3 to 6 feet. 
.monday...northeast winds to 30 knots becoming east. a chance of
showers monday night. waves 5 to 8 feet. waves occasionally
around 10 feet. 
.tuesday...east winds to 30 knots diminishing to 15 to 25 knots.
a chance of showers. waves 5 to 8 feet. waves occasionally around
10 feet. 

winds and waves higher in and near thunderstorms.

$$