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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri oct 9 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 ridge averaging 30.1 inches overhead today will slowly 
exit eastward tonight through saturday and allow a warm front to 
drift northward across the lake. on sunday through tuesday, a weak 
trough averaging 29.9 inches will overspread our area generally from 
the west with a cold front sweeping eastward across the lake on 
tuesday. simultaneously, the future remnant low of isaias will 
wobble northeastward from near the lower ohio valley to atlantic 
waters south of nova scotia and weaken to 29.6 inches sunday through 
tuesday.


loz063>065-091500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt fri oct 9 2026

.today...west winds 15 to 20 knots. a chance of waterspouts. a
chance of showers. waves 4 to 7 feet subsiding to 3 to 6 feet.
waves occasionally around 9 feet. 
.tonight...northwest winds 15 to 20 knots becoming east and
diminishing to 5 to 10 knots. waves 3 to 6 feet subsiding to 1 to
3 feet. 
.saturday...east winds 5 to 15 knots. waves 2 feet or less. 
.saturday night...east winds 10 to 15 knots becoming southeast
15 to 20 knots. waves 1 to 3 feet. 
.sunday...southeast winds 15 to 20 knots diminishing to 5 to
15 knots. showers. waves 1 to 3 feet. 
.monday...northeast winds 10 knots or less becoming southwest and
increasing to 15 to 20 knots. a chance of showers monday night.
waves 1 foot or less building to 1 to 3 feet. 
.tuesday...west winds 15 to 20 knots becoming northwest. a chance
of showers. waves 2 to 4 feet building to 3 to 5 feet, then
subsiding 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
403 am edt fri oct 9 2026


slz022-024-091500-
saint lawrence river from cape vincent to saint regis
403 am edt fri oct 9 2026

.today...west winds 5 to 15 knots. a chance of showers this
afternoon. 
.tonight...northwest winds 5 to 10 knots becoming light and
variable. becoming mainly clear. 
.saturday...light and variable winds. sunny.
.saturday night...east winds 10 knots or less becoming south.
mainly clear in the evening, then becoming mostly cloudy. 
.sunday...south winds 10 knots or less. a chance of showers
during the day, then showers likely sunday night. 
.monday...light and variable winds becoming southwest 5 to
10 knots. showers likely monday night. 
.tuesday...southwest winds 5 to 10 knots becoming northwest.
showers likely. 

$$