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open lake forecast for lake ontario
national weather service buffalo ny
1001 am edt tue may 26 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 30.1 inch high will remain across the region today. a 
cold front associated with a 29.8 inch low over new england will 
drop south across the lake wednesday morning. a 30.2 inch high over 
canada will start to expand south over the lake on thursday into 
friday. a 29.6 inch low is expected to move across new england 
saturday.


loz063>065-262100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1001 am edt tue may 26 2026

.this afternoon...south winds 5 to 15 knots becoming southwest.
waves 2 feet or less. 
.tonight...southwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.wednesday...west winds 5 to 10 knots. waves 1 to 2 feet. 
.wednesday night...west winds 5 to 15 knots becoming north. waves
2 feet or less. 
.thursday...north winds 5 to 15 knots becoming west. waves 2 feet
or less. 
.friday...west winds 10 to 15 knots becoming north. waves 1 to
3 feet. 
.saturday...north winds 5 to 15 knots becoming northwest. waves
1 to 3 feet subsiding to 1 foot or less. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
938 am edt tue may 26 2026


slz022-024-262115-
saint lawrence river from cape vincent to saint regis
938 am edt tue may 26 2026

...small craft advisory in effect until 8 pm edt this evening...

.this afternoon...southwest winds 10 to 15 knots increasing to
15 to 20 knots. sunny.
.tonight...southwest winds 15 to 20 knots diminishing to less
than 10 knots. mainly clear in the evening, then becoming partly
cloudy. 
.wednesday...light and variable winds becoming northwest 5 to
10 knots. mostly sunny. 
.wednesday night...northwest winds 10 knots or less becoming
north. partly cloudy. 
.thursday...north winds 5 to 10 knots becoming light and
variable. partly to mostly cloudy. 
.friday...west winds 5 to 10 knots becoming north. showers
likely. 
.saturday...north winds 5 to 10 knots becoming light and
variable. a chance of showers during the day. 

$$