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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt mon sep 7 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 30.2 inch high will settle over the lower great lakes 
today this high will then drift to the eastern seaboard tuesday, 
then east of the mid atlantic coast by wednesday. meanwhile, a 29.3 
inch low over far northwest ontario province tuesday night will move 
to hudson bay by late wednesday, then to northern quebec by thursday 
while deepening to 29.0 inches. a trailing cold front will cross the 
lower great lakes wednesday night. a 30.0 inch high will build 
across the eastern great lakes region thursday through friday.


loz062-071500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt mon sep 7 2026

.today...southwest winds 10 knots or less becoming west. waves
1 foot or less. 
.tonight...southwest winds 10 knots or less becoming west. waves
1 foot or less. 
.tuesday...west winds less than 10 knots. waves 1 foot or less. 
.tuesday night...east winds 5 to 10 knots becoming south. waves
1 foot or less. 
.wednesday...southwest winds 15 to 25 knots becoming west.
showers likely. waves 1 to 3 feet building to 4 to 7 feet, then
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.thursday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.friday...northwest winds 5 to 10 knots becoming south. waves
1 to 3 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt mon sep 7 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 30.2 inch high will settle over the lower great lakes 
today this high will then drift to the eastern seaboard tuesday, 
then east of the mid atlantic coast by wednesday. meanwhile, a 29.3 
inch low over far northwest ontario province tuesday night will move 
to hudson bay by late wednesday, then to northern quebec by thursday 
while deepening to 29.0 inches. a trailing cold front will cross the 
lower great lakes wednesday night. a 30.0 inch high will build 
across the eastern great lakes region thursday through friday.


loz063>065-071500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt mon sep 7 2026

.today...northwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.tonight...west winds 5 to 15 knots. waves 2 feet or less. 
.tuesday...west winds 10 knots or less becoming north. waves
1 foot or less. 
.tuesday night...east winds 5 to 15 knots becoming south. waves
2 feet or less. 
.wednesday...south winds 15 to 25 knots becoming southwest.
showers. waves 1 to 3 feet building to 4 to 7 feet, then
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.thursday...west winds 15 to 20 knots becoming northwest. a
chance of showers during the day. waves 4 to 7 feet subsiding to
3 to 5 feet. waves occasionally around 9 feet. 
.friday...northwest winds 5 to 15 knots becoming south. waves
2 to 4 feet subsiding to 1 to 3 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
347 am edt mon sep 7 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 builds to 30.20 inches today and tonight, gradually
weakening to 30.00 inches wednesday ahead of a cold front that
will track across lake erie late wednesday into wednesday night. a
post frontal trough lingers at 29.90 inches thursday. high
pressure builds back to 30.10 inches friday.


lez061-168-169-071430-
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-
347 am edt mon sep 7 2026

.today...east winds 5 to 10 knots becoming northeast. a slight
chance of waterspouts. waves 2 feet or less. 
.tonight...northeast winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.tuesday...southeast winds less than 10 knots becoming northeast.
waves 1 foot or less. 
.tuesday night...east winds 5 to 15 knots becoming south. waves
1 to 3 feet. 
.wednesday...southwest winds 15 to 25 knots becoming west. a
chance of showers during the day, then showers with a chance of
thunderstorms wednesday night. waves 3 to 6 feet. 
.thursday...west winds 5 to 15 knots becoming north. a chance of
showers during the day. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.friday...northwest winds 10 knots or less becoming south. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$