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open lake forecast for lake ontario
national weather service buffalo ny
1012 am est tue jan 13 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 29.3 inch low will move from western ontario to 
southern quebec through wednesday. this system will push its 
trailing cold front across the lake wednesday night, when a 
secondary 29.4 inch coastal low will develop along the mid-atlantic 
coastline. the secondary low will then track northeast to the gulf 
of maine thursday and to newfoundland friday, while 30.0 inch high 
pressure slowly builds east across the great lakes. a 29.8 inch low 
and attendant cold fronts will then slide across the great lakes 
saturday.


loz063>065-132215-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1012 am est tue jan 13 2026

.this afternoon...south winds 15 to 20 knots. a chance of rain
showers late. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.tonight...south winds 15 to 25 knots becoming southwest. rain
showers likely in the evening. a chance of rain showers late.
waves 3 to 5 feet building to 5 to 8 feet. waves occasionally
around 10 feet. 
.wednesday...southwest winds 15 to 25 knots becoming west. rain
showers likely in the morning, then rain showers likely with a
chance of snow showers in the afternoon. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.wednesday night...west winds 15 to 25 knots becoming northwest.
snow and rain showers in the evening, then snow showers
overnight. waves 2 to 4 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.thursday...northwest winds 15 to 25 knots becoming west. snow
showers likely during the day, then a chance of snow showers
thursday night. waves 4 to 7 feet subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.friday...southwest winds 15 to 25 knots. a chance of snow
showers. waves 3 to 6 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.saturday...southwest winds 20 to 25 knots. a chance of snow
showers. waves 3 to 6 feet building to 5 to 8 feet. waves
occasionally around 10 feet. 

$$