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open lake forecast for lake ontario
national weather service buffalo ny
403 am edt sun may 24 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 large 30.4 inch high will strengthen to 30.6 inches as 
it anchors over atlantic canada today. a 30.0 inch low and attendant 
warm front will cross the lower great lakes this morning, before 
weakening and sliding eastward by tonight. a 30.1 inch high will 
settle across the region monday through tuesday. a cold front 
associated with a 29.8 inch low over new england will drop south 
across the lake on wednesday morning. high pressure over canada will 
start to expand south over the lake on thursday.


loz062-241500-
lake ontario open waters from the niagara river to hamlin beach-
403 am edt sun may 24 2026

.today...east winds 15 to 20 knots diminishing to less than
10 knots this afternoon. showers likely early, then a chance of
showers late this morning. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.tonight...east winds 10 knots or less becoming north. showers
likely. waves 2 feet or less. 
.monday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.monday night...southwest winds less than 10 knots. waves 1 foot
or less. 
.tuesday...southwest winds less than 10 knots increasing to 10 to
15 knots. waves 2 feet or less. 
.wednesday...west winds 5 to 10 knots becoming north. waves
2 feet or less. 
.thursday...north winds 5 to 10 knots becoming northwest. waves
1 foot or less. 

$$

fzus61 kbuf 240803
glflo 
expires:202605241500;;556078

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt sun may 24 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 large 30.4 inch high will strengthen to 30.6 inches as 
it anchors over atlantic canada today. a 30.0 inch low and attendant 
warm front will cross the lower great lakes this morning, before 
weakening and sliding eastward by tonight. a 30.1 inch high will 
settle across the region monday through tuesday. a cold front 
associated with a 29.8 inch low over new england will drop south 
across the lake on wednesday morning. high pressure over canada will 
start to expand south over the lake on thursday.


loz063>065-241500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 am edt sun may 24 2026

.today...southeast winds 15 to 25 knots. rain early, then a
chance of showers late this morning. waves 3 to 6 feet. 
.tonight...southeast winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers early, then showers from late
evening on. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.monday...south winds 5 to 10 knots becoming west. a chance of
showers in the morning. waves 2 feet or less. 
.monday night...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 
.tuesday...south winds 5 to 10 knots becoming west. waves 2 feet
or less. 
.wednesday...west winds 5 to 10 knots becoming north. waves
2 feet or less. 
.thursday...north winds 5 to 10 knots becoming northwest. waves
2 feet or less. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 am edt sun may 24 2026


slz022-024-241500-
saint lawrence river from cape vincent to saint regis
403 am edt sun may 24 2026

.today...southeast winds 5 to 15 knots. rain early, then showers
likely late this morning. a chance of showers early this
afternoon. 
.tonight...southeast winds 5 to 10 knots. a chance of showers
late in the evening. showers after midnight. 
.monday...southeast winds 10 knots or less becoming west. patchy
fog in the morning. showers likely in the morning, then a chance
of showers in the afternoon. 
.monday night...southwest winds 10 knots or less. mainly clear in
the evening, then becoming partly cloudy. 
.tuesday...southwest winds 5 to 15 knots. mainly clear, then
becoming partly cloudy. 
.wednesday...west winds 10 knots or less becoming north. a chance
of showers. 
.thursday...north winds 10 knots or less becoming northwest.
mainly clear, then becoming partly cloudy. 

$$