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open lake forecast for lake ontario
national weather service buffalo ny
1009 am edt sat mar 28 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 strong 30.6 inch high will build to the ohio valley by 
this afternoon, then off the mid atlantic coast sunday. a 30.0 inch 
trough will sag southward across eastern canada monday, then move 
across the eastern great lakes monday night, followed by a deeper 
29.5 inch low tuesday night into early wednesday. another strong 
30.7 inch high across quebec is then forecast to extend down across 
the lake thursday.


loz062-282100-
lake ontario open waters from the niagara river to hamlin beach-
1009 am edt sat mar 28 2026

.rest of today...northwest winds 15 to 20 knots becoming west.
waves 3 to 5 feet. 
.tonight...west winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 2 to 4 feet. 
.sunday...southwest winds 15 to 20 knots. waves 2 to 4 feet. 
.sunday night...southwest winds 10 to 15 knots. waves 1 to
3 feet. 
.monday...southwest winds 5 to 15 knots becoming southeast 15 to
20 knots. showers likely monday night. waves 1 to 3 feet. 
.tuesday...south winds 15 to 25 knots becoming west. showers
during the day, then showers with a chance of thunderstorms
tuesday night. waves 3 to 5 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.wednesday...west winds 15 to 20 knots becoming northeast. rain
showers during the day. waves 4 to 7 feet subsiding to 3 to
5 feet. waves occasionally around 9 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1009 am edt sat mar 28 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 strong 30.6 inch high will build to the ohio valley by 
this afternoon, then off the mid atlantic coast sunday. a 30.0 inch 
trough will sag southward across eastern canada monday, then move 
across the eastern great lakes monday night, followed by a deeper 
29.5 inch low tuesday night into early wednesday. another strong 
30.7 inch high across quebec is then forecast to extend down across 
the lake thursday.


loz063>065-282100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1009 am edt sat mar 28 2026

.rest of today...west winds 15 to 25 knots. a chance of snow
showers late this morning, then a chance of flurries early this
afternoon. waves 3 to 5 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.tonight...west winds 15 to 20 knots becoming southwest 10 to
15 knots. waves 4 to 7 feet subsiding to 2 to 4 feet. waves
occasionally around 9 feet. 
.sunday...south winds 10 to 15 knots becoming southwest. waves
1 to 3 feet. 
.sunday night...southwest winds 10 to 15 knots. waves 1 to
2 feet. 
.monday...southwest winds 5 to 15 knots becoming southeast. rain
showers likely monday night. waves 1 to 2 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest. showers
during the day, then showers with a chance of thunderstorms
tuesday night. waves 1 to 3 feet building to 5 to 8 feet. waves
occasionally around 10 feet. 
.wednesday...west winds 15 to 25 knots becoming north. rain
showers during the day, then a chance of rain showers wednesday
night. waves 5 to 8 feet subsiding to 3 to 6 feet. waves
occasionally around 10 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
1010 am edt sat mar 28 2026


slz022-024-282100-
saint lawrence river from cape vincent to saint regis
1010 am edt sat mar 28 2026

.this afternoon...southwest winds 5 to 15 knots becoming west. a
chance of flurries. 
.tonight...west winds 5 to 15 knots becoming southwest. a chance
of snow showers after midnight. 
.sunday...southwest winds 5 to 15 knots. a chance of snow showers
in the morning. 
.sunday night...southwest winds 5 to 10 knots. mostly cloudy. 
.monday...southwest winds 5 to 10 knots becoming east. a chance
of rain showers monday night. 
.tuesday...east winds 10 to 15 knots becoming southwest. rain
showers. 
.wednesday...west winds 5 to 10 knots becoming north. rain
showers during the day. 

$$