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open lake forecast for lake ontario
national weather service buffalo ny
1011 pm edt sun apr 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 29.1 inch low over quebec will push its trailing 
secondary and tertiary cold fronts across the lake tonight and 
monday. a 30.5 inch high will build across the great lakes tuesday 
and tuesday night, before sliding east and off the new england coast 
wednesday. a 29.6 inch surface low will then track northeast across 
ontario and quebec, and will eventually slide its trailing cold 
front across the lake thursday night and friday.


loz062-060900-
lake ontario open waters from the niagara river to hamlin beach-
1011 pm edt sun apr 5 2026

.rest of tonight...west winds 15 to 25 knots. waves 5 to 8 feet.
waves occasionally around 10 feet. 
.monday...west winds 15 to 20 knots diminishing to 5 to 15 knots.
a chance of rain and snow showers late. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.monday night...northwest winds 5 to 15 knots increasing to 15 to
25 knots. snow showers with rain showers likely in the evening,
then snow showers overnight. waves 1 to 2 feet building to 3 to
6 feet. 
.tuesday...northwest winds 15 to 25 knots. snow showers likely in
the morning. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.tuesday night...northwest winds 15 to 20 knots becoming
southwest 5 to 15 knots. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.wednesday...south winds 5 to 15 knots increasing to 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet. 
.thursday...south winds 15 to 25 knots becoming southwest. a
chance of showers. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.friday...southwest winds 10 to 15 knots becoming northwest. a
chance of showers. waves 1 to 3 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1011 pm edt sun apr 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 29.1 inch low over quebec will push its trailing 
secondary and tertiary cold fronts across the lake tonight and 
monday. a 30.5 inch high will build across the great lakes tuesday 
and tuesday night, before sliding east and off the new england coast 
wednesday. a 29.6 inch surface low will then track northeast across 
ontario and quebec, and will eventually slide its trailing cold 
front across the lake thursday night and friday.


loz063>065-060900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1011 pm edt sun apr 5 2026

.rest of tonight...west winds 15 to 25 knots. a chance of snow
and rain showers late this evening, then a chance of snow showers
after midnight. waves 6 to 9 feet. waves occasionally around
11 feet. 
.monday...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of snow showers in the morning. waves 4 to
7 feet subsiding to 2 to 4 feet. waves occasionally around
9 feet. 
.monday night...west winds 10 to 15 knots becoming northwest and
increasing to 15 to 25 knots. snow showers. waves 1 to 3 feet
building to 3 to 6 feet. 
.tuesday...northwest winds 15 to 25 knots becoming west. snow
showers likely in the morning, then a chance of snow showers in
the afternoon. waves 4 to 7 feet subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.tuesday night...west winds 15 to 20 knots diminishing to 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.wednesday...south winds 5 to 10 knots increasing to 30 knots.
waves 1 to 3 feet building to 3 to 6 feet. 
.thursday...south winds to 30 knots. a chance of rain showers
thursday night. waves 4 to 7 feet subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.friday...south winds 15 to 20 knots becoming northwest 5 to
15 knots. a chance of rain showers. waves 3 to 6 feet subsiding
to 1 to 3 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
1004 pm edt sun apr 5 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...
low pressure 29.90 inches will move east through the great lakes on 
monday, extending a cold front across the lake. high pressure 30.60 
inches will build across the region tuesday and persist into 
wednesday. low pressure 29.80 inches will move east through the 
upper great lakes on thursday, extending a cold front southeast 
across the lower great lakes. this front will remain nearly 
stationary just south of lake erie into friday.


lez061-168-169-060815-
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-
1004 pm edt sun apr 5 2026

.overnight...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 3 feet. 
.monday...west winds 5 to 10 knots. snow showers likely with a
slight chance of rain showers in the morning, then a chance of
rain and snow showers in the afternoon. waves 1 to 2 feet. 
.monday night...west winds 10 to 15 knots becoming northwest
15 to 20 knots. rain and snow showers likely in the evening, then
snow showers likely overnight. waves 2 to 4 feet building to 3 to
6 feet. 
.tuesday...northwest winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of snow showers in the morning. waves 3 to
6 feet subsiding to 1 to 3 feet. 
.tuesday night...west winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.wednesday...southeast winds 5 to 15 knots becoming south 15 to
20 knots. waves 2 feet or less building to 3 to 5 feet. 
.thursday...south winds 15 to 25 knots diminishing to 10 to
15 knots. a chance of showers thursday night. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.friday...southwest winds 10 knots or less becoming northeast. a
chance of rain showers. waves 2 feet or less. 

$$