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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sun oct 26 2025

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...an expansive 30.5 inch high will slowly build east into 
quebec through tonight, where it will then remain anchored through 
wednesday night before slowly weakening. a surface low will then 
approach the lake from the south later in the week while 
strengthening to around 29.4 inches.


loz062-261500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sun oct 26 2025

.today...north winds 10 knots or less becoming northeast. waves
2 feet or less. 
.tonight...northeast winds 10 knots or less. a chance of showers
late. waves 1 foot or less. 
.monday...northeast winds 10 to 15 knots becoming east 15 to
20 knots. a chance of showers. waves 1 to 3 feet. 
.monday night...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet. 
.tuesday...east winds 15 to 20 knots. waves 2 to 4 feet building
to 3 to 6 feet. 
.wednesday...east winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers wednesday night. waves 2 to 4 feet.
.thursday...east winds 15 to 25 knots becoming northeast. a
chance of showers during the day, then showers likely thursday
night. waves 3 to 6 feet building to 5 to 7 feet. waves
occasionally around 9 feet. 

$$

fzus61 kbuf 260802
glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sun oct 26 2025

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...an expansive 30.5 inch high will slowly build east into 
quebec through tonight, where it will then remain anchored through 
wednesday night before slowly weakening. a surface low will then 
approach the lake from the south later in the week while 
strengthening to around 29.4 inches.


loz063>065-261500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sun oct 26 2025

.today...northeast winds 5 to 15 knots becoming north. waves
2 feet or less. 
.tonight...northeast winds 10 knots or less. waves 1 foot or
less. 
.monday...northeast winds 5 to 15 knots. a chance of rain showers
in the morning. waves 2 feet or less. 
.monday night...northeast winds 10 to 15 knots becoming east.
waves 1 to 3 feet. 
.tuesday...east winds 10 to 15 knots. waves 1 to 3 feet building
to 2 to 4 feet. 
.wednesday...east winds 10 to 15 knots. a chance of showers
wednesday night. waves 1 to 3 feet. 
.thursday...east winds 15 to 25 knots becoming northeast. a
chance of showers during the day, then showers likely thursday
night. waves 2 to 4 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am edt sun oct 26 2025


slz022-024-261500-
saint lawrence river from cape vincent to saint regis
402 am edt sun oct 26 2025

.today...northwest winds less than 10 knots becoming north.
mostly sunny. 
.tonight...north winds less than 10 knots. partly to mostly
cloudy. 
.monday...north winds 10 knots or less becoming northeast. mostly
sunny. 
.monday night...northeast winds 10 knots or less. partly cloudy. 
.tuesday...northeast winds 10 knots or less. mainly clear. 
.wednesday...northeast winds 10 knots or less. partly cloudy. 
.thursday...northeast winds 10 knots or less. a chance of rain
showers during the day, then rain showers likely thursday night. 

$$