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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt fri sep 18 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 30.3 inch high will build from northwest ontario 
today 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.


loz062-182100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt fri sep 18 2026

.this afternoon...northeast winds 5 to 15 knots becoming north.
waves 1 to 2 feet. 
.tonight...north winds 10 to 15 knots becoming east 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet. 
.saturday...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday night...east winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots increasing to 15 to
25 knots. waves 1 to 3 feet building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots increasing to 30 knots.
a chance of showers monday night. waves 5 to 8 feet building to
7 to 10 feet. waves occasionally around 13 feet. 
.tuesday...northeast winds to 30 knots becoming east. a chance of
showers. waves 7 to 10 feet. waves occasionally around 13 feet. 

$$

fzus61 kbuf 181402
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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt fri sep 18 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 30.3 inch high will build from northwest ontario 
today 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>065-182100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt fri sep 18 2026

.this afternoon...north winds 10 to 15 knots. waves 1 to 3 feet. 
.tonight...north winds 10 to 15 knots becoming northeast 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday...northeast winds 5 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.saturday night...east winds 5 to 10 knots becoming southeast. 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 to 30 knots. 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 9 feet subsiding to 4 to 7 feet.
waves occasionally around 11 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
943 am edt fri sep 18 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 over lake erie today before 
low pressure 29.80 inches moves east across the southern great lakes 
this weekend. a trough averaging 29.90 inches will linger into early 
next week.


lez061-168-169-182015-
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-
943 am edt fri sep 18 2026

.this afternoon...northeast winds 5 to 15 knots. waves 1 to
3 feet. 
.tonight...northeast winds 10 to 15 knots becoming east. waves
1 to 3 feet. 
.saturday...east winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday night...east winds 5 to 15 knots. a chance of showers
in the evening, then showers likely 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 4 to 7 feet. waves occasionally around 9 feet. 
.monday...northeast winds to 30 knots. a chance of showers monday
night. waves 5 to 9 feet. waves occasionally around 11 feet. 
.tuesday...northeast winds to 30 knots becoming east. a chance of
showers during the day, then showers likely tuesday night. waves
5 to 9 feet. waves occasionally around 11 feet. 

winds and waves higher in and near thunderstorms.

$$