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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt fri sep 25 2026


slz022-024-260900-
saint lawrence river from cape vincent to saint regis
1003 pm edt fri sep 25 2026

.overnight...north winds 10 knots or less. mainly clear. 
.saturday...north winds 5 to 10 knots becoming northeast. mostly
sunny through early afternoon, then becoming mostly cloudy. 
.saturday night...northeast winds 5 to 15 knots. partly to mostly
cloudy. 
.sunday...northeast winds 10 to 15 knots. a chance of rain in the
afternoon. 
.sunday night...northeast winds 5 to 15 knots. a chance of rain. 
.monday...northeast winds 10 knots or less. a chance of showers
during the day. 
.tuesday...light and variable winds. mostly cloudy, then becoming
partly cloudy. 
.wednesday...south winds 10 knots or less. partly to mostly
cloudy. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri sep 25 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...an expansive 30.3 inch high will persist across 
ontario and southern quebec through saturday before drifting to 
eastern quebec and labrador sunday. meanwhile, low pressure off the 
east coast will deepen to 29.2 inches saturday east of the delmarva. 
this low will move to near the jersey shore and long island saturday 
night through sunday, then meander northeast along the new england 
coast monday through tuesday while gradually filling to 29.8 inches.


loz062-260900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt fri sep 25 2026

.overnight...north winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.saturday...north winds 15 to 20 knots diminishing to 5 to
15 knots. waves 1 to 3 feet. 
.saturday night...north winds 10 to 15 knots becoming northeast
15 to 20 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.sunday...northeast winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.sunday night...northeast winds 15 to 20 knots diminishing to
10 to 15 knots. waves 2 to 4 feet building to 3 to 5 feet. 
.monday...northeast winds 5 to 15 knots becoming north less than
10 knots. waves 2 to 4 feet subsiding to 2 feet or less. 
.tuesday...light and variable winds. waves 1 foot or less. 
.wednesday...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri sep 25 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...an expansive 30.3 inch high will persist across 
ontario and southern quebec through saturday before drifting to 
eastern quebec and labrador sunday. meanwhile, low pressure off the 
east coast will deepen to 29.2 inches saturday east of the delmarva. 
this low will move to near the jersey shore and long island saturday 
night through sunday, then meander northeast along the new england 
coast monday through tuesday while gradually filling to 29.8 inches.


loz063>065-260900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt fri sep 25 2026

.overnight...north winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday...north winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 5 feet, then subsiding to 2 to 4 feet. 
.saturday night...north winds 15 to 25 knots becoming northeast.
waves 2 to 4 feet building to 4 to 7 feet. waves occasionally
around 9 feet. 
.sunday...northeast winds to 30 knots diminishing to 15 to
25 knots. a chance of rain in the afternoon. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.sunday night...northeast winds 15 to 20 knots. a chance of rain.
waves 3 to 6 feet. 
.monday...northeast winds 5 to 15 knots becoming north. waves
2 to 4 feet subsiding to 1 foot or less. 
.tuesday...north winds 10 knots or less becoming south. waves
1 foot or less. 
.wednesday...south winds 5 to 15 knots. waves 2 feet or less. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
1005 pm edt fri sep 25 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 of 30.30 inches will persist over the great lakes 
through monday before pushing east on tuesday. a cold front will 
slowly approach from the west on wednesday and weaken.


lez061-168-169-260815-
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-
1005 pm edt fri sep 25 2026

.overnight...northeast winds 15 to 20 knots diminishing to
10 to 15 knots. waves 1 to 3 feet. 
.saturday...northeast winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday night...northeast winds 10 to 15 knots. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.sunday...northeast winds 10 to 15 knots. waves 1 to 3 feet. 
.sunday night...northeast winds 10 to 15 knots. waves 1 to
3 feet. 
.monday...northeast winds 10 to 15 knots becoming light and
variable. waves 2 feet or less. 
.tuesday...north winds 10 knots or less becoming south. waves
2 feet or less. 
.wednesday...south winds 5 to 15 knots. waves 1 to 3 feet. 

$$