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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1010 pm edt wed mar 25 2026


slz022-024-260900-
saint lawrence river from cape vincent to saint regis
1010 pm edt wed mar 25 2026

.rest of tonight...east winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. a chance of rain showers and
freezing rain late this evening, then rain showers likely with a
chance of freezing rain after midnight. rain showers likely late.
.thursday...southwest winds 5 to 15 knots becoming west. a chance
of rain showers early. a chance of rain showers late. 
.thursday night...northwest winds 5 to 15 knots becoming north.
rain showers likely with a chance of snow showers in the evening,
then a chance of rain and snow showers overnight. 
.friday...north winds 5 to 15 knots. sunny.
.friday night...north winds 10 knots or less. partly to mostly
cloudy. 
.saturday...northwest winds 10 knots or less becoming southwest.
partly cloudy. 
.sunday...southwest winds 5 to 10 knots becoming south. partly
cloudy, then becoming mostly cloudy. 
.monday...southwest winds 5 to 10 knots becoming northwest. a
chance of rain and snow showers during the day. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1009 pm edt wed mar 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...a 29.7 inch low over the central great lakes tonight 
will pass north of the lake on thursday, then to the gulf of saint 
lawrence by early friday, with a trailing cold front crossing the 
lake thursday evening. a large 30.7 inch high will then build across 
the great lakes region friday through sunday.


loz062-260900-
lake ontario open waters from the niagara river to hamlin beach-
1009 pm edt wed mar 25 2026

.overnight...southeast winds 5 to 15 knots becoming
southwest. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...southwest winds 15 to 20 knots becoming northwest
10 to 15 knots. a chance of showers early in the afternoon.
showers likely late. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.thursday night...northeast winds 10 to 15 knots becoming north
15 to 20 knots. rain showers in the evening, then rain showers
likely with a chance of snow showers overnight. waves 1 to 3 feet
building to 2 to 4 feet. 
.friday...north winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of snow showers in the morning. waves 3 to
5 feet subsiding to 2 to 3 feet. 
.friday night...northwest winds 10 to 15 knots. waves 1 to
3 feet. 
.saturday...northwest winds 10 to 15 knots becoming west 15 to
20 knots. waves 1 to 2 feet building to 3 to 5 feet. 
.sunday...southwest winds 10 to 15 knots increasing to 15 to
20 knots. waves 2 to 4 feet building to 3 to 5 feet. 
.monday...southwest winds 15 to 25 knots becoming north. waves
3 to 6 feet subsiding to 2 to 4 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1009 pm edt wed mar 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...a 29.7 inch low over the central great lakes tonight 
will pass north of the lake on thursday, then to the gulf of saint 
lawrence by early friday, with a trailing cold front crossing the 
lake thursday evening. a large 30.7 inch high will then build across 
the great lakes region friday through sunday.


loz063-064-260900-
lake ontario open waters from hamlin beach to mexico bay-
1009 pm edt wed mar 25 2026

.overnight...southeast winds 15 to 20 knots becoming south.
a chance of rain showers late. waves 1 to 3 feet building to 3 to
5 feet. 
.thursday...southwest winds 10 to 15 knots becoming northwest. a
chance of rain showers early in the afternoon. rain showers
likely late. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.thursday night...north winds 10 to 15 knots increasing to 15 to
25 knots. rain showers in the evening, then rain showers with a
chance of snow showers overnight. waves 2 to 3 feet building to
3 to 5 feet. 
.friday...north winds 15 to 25 knots. a chance of snow showers in
the morning. waves 4 to 7 feet subsiding to 2 to 4 feet. waves
occasionally around 9 feet. 
.friday night...north winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday...northwest winds 10 to 15 knots becoming west 15 to
20 knots. waves 1 to 2 feet building to 3 to 6 feet. 
.sunday...west winds 15 to 20 knots becoming south. waves 3 to
5 feet. 
.monday...southwest winds 15 to 20 knots becoming north. waves
3 to 6 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1009 pm edt wed mar 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...a 29.7 inch low over the central great lakes tonight 
will pass north of the lake on thursday, then to the gulf of saint 
lawrence by early friday, with a trailing cold front crossing the 
lake thursday evening. a large 30.7 inch high will then build across 
the great lakes region friday through sunday.


loz065-260900-
lake ontario open waters from mexico bay to the saint lawrence
river-
1009 pm edt wed mar 25 2026

.overnight...south winds 15 to 20 knots. a chance of rain
showers late. waves 1 to 3 feet building to 3 to 5 feet. 
.thursday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. a chance of rain showers early in the afternoon. rain
showers likely late. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.thursday night...southeast winds around 10 knots becoming north
and increasing to 15 to 20 knots. rain showers in the evening,
then rain showers likely with a chance of snow showers overnight.
waves 1 to 3 feet building to 2 to 4 feet. 
.friday...north winds 15 to 25 knots. a chance of snow showers in
the morning. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.friday night...north winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday...northwest winds 5 to 15 knots becoming west 15 to
20 knots. waves 1 foot or less building to 3 to 5 feet. 
.sunday...west winds 10 to 15 knots becoming south 15 to
20 knots. waves 3 to 5 feet. 
.monday...south winds 15 to 20 knots becoming north. waves 3 to
6 feet subsiding to 2 to 4 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
937 pm edt wed mar 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...
a ridge averaging 30.40 inches will continue to exit to the east
tonight before a strong cold front moves southeast across lake 
erie thursday evening. behind the cold front, another ridge 
averaging 30.40 inches will influence lake erie friday through 
the weekend. the ridge will exit to the east by monday.


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-
937 pm edt wed mar 25 2026

.overnight...south winds 10 to 15 knots becoming southwest.
a slight chance of rain showers. waves 1 to
3 feet. 
.thursday...southwest winds 10 to 15 knots. a slight chance of
rain showers late in the morning. a chance of rain showers early
in the afternoon, then rain showers with a slight chance of
thunderstorms late. waves 1 to 3 feet. 
.thursday night...northwest winds 10 to 15 knots becoming north
15 to 20 knots. rain showers. waves 1 to 3 feet. 
.friday...north winds 15 to 20 knots becoming northeast 10 to
15 knots. a chance of rain and snow showers in the morning. waves
1 to 3 feet. 
.friday night...north winds 5 to 15 knots becoming northwest.
waves 2 feet or less. 
.saturday...northwest winds 5 to 15 knots becoming southwest.
waves 1 to 3 feet. 
.sunday...southwest winds 5 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet. 
.monday...southwest winds 15 to 20 knots becoming northeast 10 to
15 knots. a chance of rain monday night. waves 2 to 4 feet
subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$