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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt wed sep 30 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 30.1 inch high will continue to build across the 
eastern seaboard, spanning across the eastern great lakes this 
afternoon. a warm front will lift across the lake thursday, followed 
by a cold front crossing the lower great lakes later thursday night 
and friday morning. a 30.3 inch high is then forecast to build into 
the western great lakes friday night and over the eastern great 
lakes by saturday, before exiting into northern new england sunday. 
meanwhile, a cold front will then cross the eastern great lakes 
sunday night, with another 30.3 inch high building from the western 
great lakes into the eastern great lakes monday and tuesday.


loz062-010900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt wed sep 30 2026

.overnight...south winds 5 to 15 knots becoming southwest.
a chance of showers. showers likely late. waves
2 feet or less. 
.thursday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. showers likely early, then a chance of showers late in
the morning. waves 1 to 3 feet. 
.thursday night...southwest winds 15 to 20 knots becoming west
10 to 15 knots. showers. waves 2 to 3 feet. 
.friday...west winds 10 to 15 knots becoming northwest. showers
likely. waves 2 to 3 feet. 
.friday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. waves 2 to 4 feet. 
.saturday...north winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.sunday...south winds 5 to 15 knots becoming northwest 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet. 
.monday...northwest winds 15 to 20 knots becoming north 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 

$$

fzus61 kbuf 010202
glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt wed sep 30 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 30.1 inch high will continue to build across the 
eastern seaboard, spanning across the eastern great lakes this 
afternoon. a warm front will lift across the lake thursday, followed 
by a cold front crossing the lower great lakes later thursday night 
and friday morning. a 30.3 inch high is then forecast to build into 
the western great lakes friday night and over the eastern great 
lakes by saturday, before exiting into northern new england sunday. 
meanwhile, a cold front will then cross the eastern great lakes 
sunday night, with another 30.3 inch high building from the western 
great lakes into the eastern great lakes monday and tuesday.


loz063>065-010900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt wed sep 30 2026

.overnight...south winds 5 to 15 knots becoming southwest.
a chance of showers late. waves 2 feet or less. 
.thursday...southwest winds 10 to 15 knots becoming south. a
chance of showers through early afternoon. waves 1 to 3 feet. 
.thursday night...southwest winds 10 to 15 knots becoming west. a
chance of showers in the evening, then showers overnight. waves
1 to 3 feet. 
.friday...west winds 10 to 15 knots increasing to 15 to 20 knots.
showers. waves 1 to 3 feet building to 2 to 4 feet. 
.friday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. a chance of showers in the evening. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.saturday...north winds 5 to 15 knots becoming southeast 10 knots
or less. waves 1 to 3 feet subsiding to 1 foot or less. 
.sunday...south winds 15 to 20 knots becoming west. waves 1 to
3 feet building to 3 to 5 feet. 
.monday...northwest winds 15 to 20 knots becoming north. waves
3 to 5 feet subsiding to 2 to 4 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
922 pm edt wed sep 30 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...
weak low pressure of 29.80 inches will slide through the central
great lakes on thursday and extend a cold front through the area 
thursday night into friday. this will be followed by high 
pressure of 30.20 inches over lake erie on saturday. another cold
front will cross the lake on sunday, followed by stronger high 
pressure 30.40 inches for early next week.


lez061-168-169-010815-
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-
922 pm edt wed sep 30 2026

.rest of tonight...south winds 10 to 15 knots. showers likely,
then a chance of showers late. waves 1 to 2 feet. 
.thursday...south winds 10 to 15 knots becoming southwest. a
chance of showers early. waves 1 to 3 feet. 
.thursday night...southwest winds 10 to 15 knots becoming west. a
chance of showers overnight. waves 1 to 3 feet. 
.friday...northwest winds 10 to 15 knots. showers in the morning.
waves 1 to 3 feet. 
.friday night...northwest winds 15 to 20 knots becoming north
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.saturday...northeast winds 5 to 15 knots becoming southeast.
waves 2 feet or less. 
.sunday...south winds 5 to 15 knots becoming northwest 15 to
20 knots. waves 2 feet or less building to 2 to 4 feet. 
.monday...north winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 

$$