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open lake forecast for lake ontario
national weather service buffalo ny
issued by national weather service cleveland oh
908 am edt thu oct 29 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 30.4 inch high will settle over the lower great 
lakes tonight. this high will then drift to the eastern seaboard 
tuesday, then east of the mid atlantic coast by wednesday. 
meanwhile, a 29.3 inch low over far northwest ontario province 
tuesday night will move to hudson bay by late wednesday, then to 
northern quebec by thursday while deepening to 29.0 inches. a 
trailing cold front will cross the lower great lakes wednesday 
night, with a 30.0 inch high building east across the eastern 
great lakes region thursday through friday, before sliding east 
into new england by saturday.


loz063>065-292115-
lake ontario open waters from hamlin beach to the saint lawrence
river-
908 am edt thu oct 29 2026

.this afternoon...south winds 15 to 20 knots becoming southwest. a
chance of showers late. waves 1 to 3 feet building to 2 to
4 feet. 
.tonight...southwest winds 15 to 20 knots becoming northwest. a
chance of showers in the evening. waves 2 to 4 feet building to
3 to 5 feet. 
.friday...west winds 15 to 20 knots. waves 3 to 6 feet. 
.friday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.saturday...north winds 10 knots or less becoming south. waves
2 feet or less. 
.sunday...southeast winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.monday...southwest winds 10 knots or less becoming southeast.
waves 1 foot or less. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
issued by national weather service cleveland oh
905 am edt thu oct 29 2026


slz022-024-292115-
saint lawrence river from cape vincent to saint regis
908 am edt thu oct 29 2026

.this afternoon...southwest winds 10 to 15 knots increasing to
15 to 20 knots. a chance of showers late. 
.tonight...southwest winds 5 to 15 knots becoming west. a chance
of showers early. 
.friday...west winds 5 to 15 knots. partly sunny in the morning,
then becoming mostly cloudy. 
.friday night...northwest winds 10 knots or less. mostly cloudy
in the evening, then clearing. 
.saturday...light and variable winds. mainly clear, then becoming
partly cloudy. 
.sunday...southwest winds less than 10 knots. partly cloudy. 
.monday...southwest winds less than 10 knots. mostly cloudy. 

$$