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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
925 pm edt thu sep 3 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 settle to the south 
tonight, then push towards the ohio valley through saturday. a 
ridge averaging 30.00 inches will build from the great lakes into 
northern ohio this weekend and into early next week.


lez061-168-169-040815-
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-
925 pm edt thu sep 3 2026

.rest of tonight...west winds 10 knots or less. thunderstorms
likely with a chance of showers late this evening, then a chance
of showers and thunderstorms after midnight. some thunderstorms
may produce damaging winds and large hail late this evening.
waves around 1 foot. 
.friday...northwest winds 10 knots or less. a chance of showers
with a slight chance of thunderstorms through early afternoon,
then a chance of showers late. waves 1 foot or less. 
.friday night...northwest winds 10 knots or less becoming
northeast. waves 1 foot or less. 
.saturday...northeast winds 10 to 15 knots. waves 2 feet or less.
.saturday night...northeast winds 5 to 15 knots becoming east.
waves 2 feet or less. 
.sunday...northeast winds 5 to 15 knots becoming east. waves
2 feet or less. 
.monday...east winds 10 knots or less becoming southeast. waves
1 foot or less. 
.tuesday...southeast winds 10 knots or less becoming south and
increasing to 15 to 20 knots. a chance of showers tuesday night.
waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$