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open lake forecast for lake ontario
national weather service buffalo ny
409 am edt sat apr 11 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 30.5 inch high over the central great lakes this 
morning will build east over the lower great lakes today, then drift 
east to new england by sunday and off the coast sunday night. a 29.4 
inch low will then move northeastward from the upper midwest sunday 
to near james bay sunday night, while pushing an attendant warm 
front across the lake on sunday. this low will strengthen to 29.2 
inches while continuing to trek northeast into northern quebec 
monday, with a trailing cold front stalling near the lake monday 
through tuesday. a 29.5 inch surface low advancing through the upper 
great lakes wednesday will lift this frontal boundary northward into 
canada. this 29.5 inch low will continue northeast into central 
quebec on thursday while dragging an attendant cold front across the 
lake. a 30.2 inch high will then build over the lower great lakes 
thursday night and friday.


loz062-111500-
lake ontario open waters from the niagara river to hamlin beach-
409 am edt sat apr 11 2026

.today...northwest winds 5 to 15 knots becoming southwest. waves
1 to 3 feet. 
.tonight...southwest winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.sunday...southeast winds 5 to 10 knots becoming east. a chance
of rain showers in the morning, then rain showers in the
afternoon. waves 2 feet or less. 
.sunday night...east winds 10 to 15 knots becoming southwest and
increasing to 15 to 25 knots. showers in the evening, then a
chance of showers overnight. waves 1 to 2 feet building to 3 to
6 feet. 
.monday...southwest winds 15 to 25 knots diminishing to 5 to
10 knots. showers during the day, then a chance of showers monday
night. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet. 
.tuesday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. showers likely with a chance of thunderstorms. waves
1 to 3 feet. 
.wednesday...southwest winds 15 to 20 knots. showers likely with
a chance of thunderstorms. waves 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
409 am edt sat apr 11 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 30.5 inch high over the central great lakes this 
morning will build east over the lower great lakes today, then drift 
east to new england by sunday and off the coast sunday night. a 29.4 
inch low will then move northeastward from the upper midwest sunday 
to near james bay sunday night, while pushing an attendant warm 
front across the lake on sunday. this low will strengthen to 29.2 
inches while continuing to trek northeast into northern quebec 
monday, with a trailing cold front stalling near the lake monday 
through tuesday. a 29.5 inch surface low advancing through the upper 
great lakes wednesday will lift this frontal boundary northward into 
canada. this 29.5 inch low will continue northeast into central 
quebec on thursday while dragging an attendant cold front across the 
lake. a 30.2 inch high will then build over the lower great lakes 
thursday night and friday.


loz063>065-111500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
409 am edt sat apr 11 2026

.today...northwest winds 10 to 15 knots becoming west. waves 1 to
3 feet. 
.tonight...west winds 5 to 15 knots becoming south less than
10 knots. waves 2 feet or less. 
.sunday...south winds 5 to 15 knots becoming southeast. a chance
of rain showers in the morning, then rain showers likely in the
afternoon. waves 2 feet or less. 
.sunday night...southeast winds 15 to 25 knots becoming south.
showers likely. waves 2 to 4 feet building to 3 to 6 feet. 
.monday...southwest winds 15 to 25 knots becoming west and
diminishing to 5 to 10 knots. showers. waves 3 to 6 feet building
to 4 to 7 feet, then subsiding to 2 to 4 feet. waves occasionally
around 9 feet. 
.tuesday...southeast winds 5 to 15 knots becoming southwest.
showers likely with a chance of thunderstorms. waves 1 to 3 feet.
.wednesday...southwest winds 15 to 20 knots. showers likely.
waves 1 to 3 feet building to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
347 am edt sat apr 11 2026

for waters beyond five nautical miles of shore on lake erie

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...
high pressure 30.40 inches will center over the region today
before shifting east on sunday. this will allow a warm front to
lift across the lake sunday afternoon with a cold front
approaching lake erie from the northwest on monday. the cold front
will stall to the north of the lake tuesday and wednesday.


lez061-168-169-111430-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-geneva-on-the-
lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
347 am edt sat apr 11 2026

.today...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.tonight...southwest winds less than 10 knots. waves 1 foot or
less. 
.sunday...east winds 5 to 15 knots becoming southeast. a chance
of rain showers. waves 2 feet or less. 
.sunday night...south winds 15 to 20 knots becoming southwest. a
chance of showers overnight. waves 1 to 3 feet building to 2 to
4 feet. 
.monday...southwest winds 15 to 20 knots diminishing to 5 to
15 knots. showers likely during the day, then a chance of showers
monday night. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots. a chance of showers
and thunderstorms during the day, then showers likely with a
chance of thunderstorms tuesday night. waves 1 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots. showers likely
during the day, then a chance of showers wednesday night. waves
2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$