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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt mon jul 6 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 build from quebec today southeast 
across new england tonight, then east of the canadian maritimes by 
tuesday. meanwhile, a weak 29.9 inch low over the ohio valley today 
will move to the mid atlantic tonight, then move off the southern 
new england coast tuesday. a broad 30.1 inch high is then forecast 
to build across the great lakes tuesday through wednesday, then 
drift off the east coast thursday. a weak cold front will cross the 
lake friday before another 30.1 inch high builds across the upper 
great lakes friday and the lower great lakes by saturday.


loz062-062100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt mon jul 6 2026

.this afternoon...northeast winds 10 to 15 knots becoming east
15 to 20 knots. a chance of showers late. waves 2 to 4 feet. 
.tonight...east winds 10 to 15 knots. waves 2 to 4 feet. 
.tuesday...east winds 10 to 15 knots. waves 1 to 3 feet. 
.tuesday night...east winds 10 knots or less. waves 2 feet or
less. 
.wednesday...north winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday...southwest winds 5 to 15 knots becoming west. a chance
of showers during the day, then showers likely thursday night.
waves 2 feet or less. 
.friday...northwest winds 10 knots or less becoming north.
showers likely during the day, then a chance of showers friday
night. waves 1 foot or less. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt mon jul 6 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 build from quebec today southeast 
across new england tonight, then east of the canadian maritimes by 
tuesday. meanwhile, a weak 29.9 inch low over the ohio valley today 
will move to the mid atlantic tonight, then move off the southern 
new england coast tuesday. a broad 30.1 inch high is then forecast 
to build across the great lakes tuesday through wednesday, then 
drift off the east coast thursday. a weak cold front will cross the 
lake friday before another 30.1 inch high builds across the upper 
great lakes friday and the lower great lakes by saturday.


loz063>065-062100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt mon jul 6 2026

.this afternoon...northeast winds 10 to 15 knots becoming east. a
chance of showers. waves 1 to 3 feet. 
.tonight...east winds 5 to 15 knots. a chance of showers early.
waves 1 to 3 feet. 
.tuesday...east winds 5 to 10 knots becoming northeast. waves
2 feet or less. 
.tuesday night...east winds 10 knots or less becoming south.
waves 1 foot or less. 
.wednesday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.thursday...southwest winds 5 to 10 knots becoming west. showers
likely with a chance of thunderstorms thursday night. waves
2 feet or less. 
.friday...west winds 5 to 10 knots becoming north. showers likely
with a chance of thunderstorms during the day, then a chance of
showers friday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
338 pm edt mon jul 6 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...
low pressure 29.90 inches near the southwestern shore of lake 
erie will continue to move slowly east into tuesday before a
trough averaging 29.90 inches lingers into wednesday. weak high 
pressure 30.00 inches will enter for thursday. a cold front will 
cross the lake on friday before high pressure 30.00 inches returns
on saturday. 


lez061-168-169-070215-
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-
338 pm edt mon jul 6 2026

.tonight...northeast winds 5 to 15 knots. a chance of showers and
thunderstorms early, then a slight chance of showers and
thunderstorms early. a slight chance of showers from late evening
on. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.tuesday night...northeast winds 10 knots or less becoming east.
waves 2 feet or less. 
.wednesday...southeast winds less than 10 knots becoming west.
waves 1 foot or less. 
.wednesday night...light and variable winds becoming south 5 to
10 knots. waves 1 foot or less. 
.thursday...southwest winds 5 to 15 knots. showers with a chance
of thunderstorms thursday night. waves 2 feet or less. 
.friday...west winds 5 to 15 knots becoming northeast. showers
likely with a chance of thunderstorms during the day. waves 1 to
2 feet. 
.saturday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 

winds and waves higher in and near thunderstorms.

$$