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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu sep 3 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 secondary cold front near lake ontario will slowly push southward 
overnight. following the frontal passage, a 30.1 inch high will 
gradually settle southward from northern ontario friday through 
monday. another cold front will then cross the lake monday night, 
with another 30.1 inch high then forecast to build south from near 
james bay on tuesday.


loz062-040900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt thu sep 3 2026

.overnight...northwest winds less than 10 knots. waves
1 foot or less. 
.friday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 
.friday night...west winds 5 to 10 knots becoming north. waves
1 foot or less. 
.saturday...north winds 10 knots or less. waves 1 foot or less. 
.saturday night...north winds 10 knots or less becoming
northeast. waves 2 feet or less. 
.sunday...northeast winds 10 to 15 knots becoming light and
variable. waves 2 feet or less. 
.monday...light and variable winds. waves 1 foot or less. 
.tuesday...northeast winds 10 knots or less becoming southeast
10 to 15 knots. a chance of showers tuesday night. waves 2 feet
or less. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt thu sep 3 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 secondary cold front near lake ontario will slowly push southward 
overnight. following the frontal passage, a 30.1 inch high will 
gradually settle southward from northern ontario friday through 
monday. another cold front will then cross the lake monday night, 
with another 30.1 inch high then forecast to build south from near 
james bay on tuesday.


loz063>065-040900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt thu sep 3 2026

.overnight...west winds 10 knots or less becoming
northwest. waves 1 foot or less. 
.friday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 
.friday night...west winds 5 to 10 knots becoming north. waves
2 feet or less. 
.saturday...north winds 5 to 10 knots. waves 2 feet or less. 
.saturday night...north winds 10 to 15 knots becoming northeast.
waves 2 feet or less. 
.sunday...northeast winds 5 to 15 knots diminishing to less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 
.monday...west winds 10 knots or less becoming southwest. waves
1 foot or less. 
.tuesday...northwest winds 5 to 15 knots becoming southeast.
waves 1 foot or less. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
345 am edt fri sep 4 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...
a frontal boundary located near lake erie will work its way to 
the south tonight and into the ohio valley through saturday with
pressure averaging 29.90 inches. a ridge averaging 30.00 inches 
will build from the great lakes into northern ohio this weekend 
and into early next week.



lez061-168-169-041415-
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-
345 am edt fri sep 4 2026

.today...northwest winds less than 10 knots becoming west. a
slight chance of showers early, then a chance of showers and
thunderstorms. a slight chance of showers and thunderstorms late.
waves 1 foot or less. 
.tonight...northwest winds 10 knots or less becoming northeast. a
slight chance of showers and thunderstorms in the evening. waves
1 foot or less. 
.saturday...northeast winds 5 to 15 knots. waves 1 to 3 feet. 
.saturday night...northeast winds 5 to 15 knots. waves 1 to
3 feet. 
.sunday...northeast winds 5 to 15 knots becoming east. waves 1 to
3 feet. 
.monday...east winds 10 knots or less. waves 1 foot or less. 
.tuesday...east winds 5 to 15 knots becoming south. a chance of
showers tuesday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$