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open lake forecast for lake ontario
national weather service buffalo ny
402 am est mon jan 5 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 across the lower great lakes early this 
morning, will drift off the east coast monday night. a weak 29.6 
inch low will then cross the lower great lakes tuesday night before 
moving off the new england coast wednesday. a 30.1 inch high will 
then proceed to build from the ohio valley wednesday to the mid 
atlantic thursday. a 29.9 inch low will cross the ohio valley 
towards the lower great lakes friday.


loz062-051600-
lake ontario open waters from the niagara river to hamlin beach-
402 am est mon jan 5 2026

.today...southeast winds 5 to 15 knots. snow through early
afternoon. waves 2 feet or less. 
.tonight...south winds 5 to 10 knots. waves 1 foot or less. 
.tuesday...southeast winds 5 to 15 knots becoming east. a chance
of rain showers in the morning, then rain in the afternoon. waves
2 feet or less. 
.tuesday night...southeast winds 10 to 15 knots becoming west
15 to 20 knots. rain. waves 1 to 3 feet building to 2 to 4 feet. 
.wednesday...west winds 15 to 20 knots becoming southwest 10 to
15 knots. rain showers likely during the day. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.thursday...southwest winds 5 to 10 knots becoming south. rain
showers likely thursday night. waves 1 to 2 feet. 
.friday...south winds 10 to 15 knots becoming east 15 to
20 knots. showers likely. waves 1 to 3 feet building to 2 to
4 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am est mon jan 5 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 across the lower great lakes early this 
morning, will drift off the east coast monday night. a weak 29.6 
inch low will then cross the lower great lakes tuesday night before 
moving off the new england coast wednesday. a 30.1 inch high will 
then proceed to build from the ohio valley wednesday to the mid 
atlantic thursday. a 29.9 inch low will cross the ohio valley 
towards the lower great lakes friday.


loz063>065-051600-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am est mon jan 5 2026

.today...southeast winds 10 to 15 knots. snow. waves 2 feet or
less. 
.tonight...south winds 5 to 15 knots becoming east. a chance of
snow early. waves 2 feet or less. 
.tuesday...east winds 5 to 15 knots becoming southeast. rain in
the afternoon. waves 2 feet or less. 
.tuesday night...southeast winds 10 to 15 knots becoming west
15 to 20 knots. rain. waves 1 to 3 feet building to 3 to 5 feet. 
.wednesday...northwest winds 15 to 20 knots becoming west 10 to
15 knots. rain showers with a chance of snow showers during the
day. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.thursday...southwest winds 5 to 15 knots becoming south 15 to
20 knots. rain showers likely thursday night. waves 1 to 3 feet
building to 2 to 4 feet. 
.friday...south winds 15 to 20 knots becoming southeast. rain
showers likely. waves 1 to 3 feet building to 2 to 4 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am est mon jan 5 2026

***this is the last issuance of the saint lawrence river forecast 
for this season. forecasts will resume in early spring 2026.***


slz022-024-051600-
saint lawrence river from cape vincent to saint regis
402 am est mon jan 5 2026

.today...light and variable winds. snow from late morning on. 
.tonight...northeast winds less than 10 knots. a chance of snow
early. 
.tuesday...northeast winds 10 knots or less. snow likely with a
chance of freezing rain in the afternoon. 
.tuesday night...northeast winds 5 to 10 knots becoming north.
snow with freezing rain likely. 
.wednesday...northwest winds 10 knots or less becoming southwest.
snow likely during the day. 
.thursday...southwest winds 10 knots or less becoming south. a
chance of rain showers thursday night. 
.friday...south winds 5 to 10 knots becoming northeast. rain
showers likely. 

$$