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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed jun 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 over michigan will slide east across 
the ohio valley today, before drifting to the eastern seaboard 
tonight through thursday. a weak 29.9 inch low is then forecast to 
move from the central great lakes thursday to southern quebec 
friday, then the canadian maritimes saturday. a 30.0 inch high will 
then build across the lower great lakes this weekend.


loz062-241500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt wed jun 24 2026

.today...west winds 5 to 10 knots becoming southwest. waves
1 foot or less. 
.tonight...southwest winds 10 knots or less becoming south. waves
1 foot or less. 
.thursday...southeast winds 10 knots or less becoming east.
showers in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 foot or less. 
.thursday night...east winds 5 to 10 knots becoming west. showers
with a chance of thunderstorms in the evening, then a chance of
showers overnight. waves 1 foot or less. 
.friday...west winds 10 knots or less becoming north. waves
1 foot or less. 
.saturday...north winds less than 10 knots becoming northwest.
waves 1 foot or less. 
.sunday...north winds less than 10 knots becoming east. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 240802
glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt wed jun 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 over michigan will slide east across 
the ohio valley today, before drifting to the eastern seaboard 
tonight through thursday. a weak 29.9 inch low is then forecast to 
move from the central great lakes thursday to southern quebec 
friday, then the canadian maritimes saturday. a 30.0 inch high will 
then build across the lower great lakes this weekend.


loz063>065-241500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt wed jun 24 2026

.today...northwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.tonight...west winds 5 to 15 knots becoming south less than
10 knots. waves 2 feet or less. 
.thursday...south winds 10 knots or less becoming east. showers
likely in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 foot or less. 
.thursday night...east winds 5 to 10 knots becoming southwest.
showers with a chance of thunderstorms in the evening, then
showers overnight. waves 1 foot or less. 
.friday...west winds 10 knots or less becoming northwest. a
chance of showers during the day. waves 2 feet or less. 
.saturday...north winds 10 knots or less becoming west. waves
1 foot or less. 
.sunday...northwest winds less than 10 knots. waves 1 foot or
less. 

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
402 am edt wed jun 24 2026


slz022-024-241500-
saint lawrence river from cape vincent to saint regis
402 am edt wed jun 24 2026

.today...northwest winds 10 knots or less becoming west. sunny.
.tonight...southwest winds 10 knots or less. mostly cloudy. 
.thursday...southwest winds less than 10 knots becoming south. a
chance of showers. 
.thursday night...southeast winds less than 10 knots becoming
south. showers.
.friday...southwest winds less than 10 knots. showers with a
chance of thunderstorms. 
.saturday...light and variable winds. partly cloudy. 
.sunday...light and variable winds. mainly clear, then becoming
partly cloudy. 

winds and waves higher in and near thunderstorms.

$$