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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt fri jul 24 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 linger just off the new england 
coast through saturday, before slowly weakening while drifting to 
the gulf of saint lawrence sunday. a 29.5 inch area of low pressure 
will develop over the western great lakes sunday night into monday, 
before strengthening to 29.3 inches while moving southeast into the 
lower great lakes region monday night and tuesday. a cold front 
associated with this low will swing across the lake late tuesday and 
tuesday night. the low will then weaken to 29.6 inches while 
drifting east into new england by wednesday.


loz063>065-250900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt fri jul 24 2026

.overnight...east winds 5 to 15 knots becoming south. waves
2 feet or less. 
.saturday...south winds 5 to 15 knots becoming east. waves 2 feet
or less. 
.saturday night...east winds 10 knots or less becoming south.
waves 1 foot or less. 
.sunday...south winds 5 to 10 knots. waves 1 foot or less. 
.sunday night...south winds 10 knots or less becoming southwest.
a chance of showers. waves 1 foot or less. 
.monday...southwest winds 5 to 10 knots becoming south. a chance
of showers and thunderstorms during the day, then showers with a
chance of thunderstorms monday night. waves 1 foot or less. 
.tuesday...southwest winds 5 to 15 knots becoming north. showers
with a chance of thunderstorms. waves 2 feet or less. 
.wednesday...north winds 5 to 15 knots. a chance of showers.
waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1003 pm edt fri jul 24 2026


slz022-024-250900-
saint lawrence river from cape vincent to saint regis
1003 pm edt fri jul 24 2026

.overnight...light and variable winds. clear.
.saturday...south winds 10 knots or less becoming southwest.
sunny.
.saturday night...southwest winds less than 10 knots. partly to
mostly cloudy. 
.sunday...south winds 10 knots or less becoming southwest. mostly
sunny. 
.sunday night...southwest winds less than 10 knots. a chance of
showers overnight. 
.monday...south winds 10 knots or less. showers likely with a
chance of thunderstorms. 
.tuesday...south winds 10 knots or less becoming north. showers
with a chance of thunderstorms. 
.wednesday...north winds 10 knots or less becoming northwest. a
chance of showers and thunderstorms. 

winds and waves higher in and near thunderstorms.

$$