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open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun aug 23 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 cold front continues to sweep eastward across lake 
ontario this evening. behind the front, a trough averaging 29.8 
inches lingers over lake ontario through monday. on tuesday through 
wednesday, a ridge averaging 30.1 inches builds from the western and 
central great lakes. the ridge should begin to exit eastward on 
thursday and allow a warm front to sweep northeastward across lake 
ontario. on friday, a cold front should sweep eastward across the 
lake and be followed by a high pressure ridge averaging 30.0 inches 
and building from the upper midwest.


loz062-240300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt sun aug 23 2026

.tonight...west winds 15 to 25 knots. a chance of waterspouts.
showers with a chance of thunderstorms early, then a chance of
showers from late evening on. waves 3 to 6 feet. 
.monday...southwest winds 15 to 25 knots becoming west. a chance
of waterspouts. a chance of showers early, then showers likely
from late morning on. waves 3 to 6 feet building to 4 to 7 feet.
waves occasionally around 9 feet. 
.monday night...west winds 15 to 20 knots. a chance of
waterspouts. showers likely in the evening, then showers
overnight. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.tuesday...northwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of waterspouts. showers. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.tuesday night...west winds 10 knots or less. waves 2 feet or
less. 
.wednesday...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 
.thursday...south winds 10 to 15 knots becoming west. a chance of
showers and thunderstorms. waves 2 feet or less. 
.friday...west winds 5 to 15 knots becoming northwest. waves 1 to
2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 232002
glflo 
expires:202608240300;;241754

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt sun aug 23 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 cold front continues to sweep eastward across lake 
ontario this evening. behind the front, a trough averaging 29.8 
inches lingers over lake ontario through monday. on tuesday through 
wednesday, a ridge averaging 30.1 inches builds from the western and 
central great lakes. the ridge should begin to exit eastward on 
thursday and allow a warm front to sweep northeastward across lake 
ontario. on friday, a cold front should sweep eastward across the 
lake and be followed by a high pressure ridge averaging 30.0 inches 
and building from the upper midwest.


loz063>065-240300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt sun aug 23 2026

.tonight...west winds 15 to 25 knots becoming southwest. a chance
of waterspouts. showers with a chance of thunderstorms this
evening, then showers after midnight. a chance of showers late.
waves 4 to 7 feet subsiding to 3 to 6 feet. waves occasionally
around 9 feet. 
.monday...southwest winds 15 to 20 knots. a chance of
waterspouts. a chance of showers in the morning, then showers
with a chance of thunderstorms in the afternoon. waves 3 to
6 feet building to 4 to 7 feet. waves occasionally around 9 feet.
.monday night...southwest winds 15 to 20 knots becoming west. a
chance of waterspouts. showers with a chance of thunderstorms in
the evening, then showers overnight. waves 3 to 6 feet. 
.tuesday...northwest winds 15 to 20 knots becoming west. a chance
of waterspouts. showers. waves 3 to 5 feet subsiding to 2 to
4 feet. 
.tuesday night...west winds 5 to 15 knots. a chance of
waterspouts in the evening. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.wednesday...southwest winds 10 knots or less becoming south and
increasing to 15 to 20 knots. waves 1 foot or less building to
1 to 3 feet. 
.thursday...south winds 15 to 20 knots becoming southwest 10 to
15 knots. a chance of showers and thunderstorms during the day,
then showers likely with a chance of thunderstorms thursday
night. waves 1 to 3 feet. 
.friday...west winds 5 to 15 knots becoming northwest. a chance
of showers during the day. waves 1 to 2 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 pm edt sun aug 23 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...
a trough averaging 29.80 will linger over the eastern great lakes 
through monday, followed by high pressure 30.00 inches monday 
night into wednesday. low pressure 29.80 inches will extend a cold
front east across the area late wednesday into thursday. high 
pressure 30.10 will return across the area on friday.


lez061-166>169-240230-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 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 pm edt sun aug 23 2026

.tonight...northwest winds 15 to 25 knots becoming west. a chance
of waterspouts. showers with a chance of thunderstorms this
evening, then a chance of showers with a slight chance of
thunderstorms after midnight. a slight chance of showers late.
waves 3 to 5 feet subsiding to 2 to 4 feet. 
.monday...west winds 15 to 25 knots. a chance of waterspouts. a
chance of showers early, then showers likely late in the morning.
a chance of showers in the afternoon. waves 3 to 5 feet building
to 5 to 8 feet. waves occasionally around 10 feet. 
.monday night...west winds 15 to 25 knots becoming northwest and
diminishing to 10 to 15 knots. a chance of waterspouts. waves
3 to 6 feet subsiding to 1 to 3 feet. 
.tuesday...northwest winds 5 to 15 knots becoming west. waves
1 to 3 feet subsiding to 1 foot or less. 
.tuesday night...west winds 5 to 10 knots becoming south. waves
1 foot or less. 
.wednesday...south winds 5 to 15 knots increasing to 15 to
20 knots. a chance of showers wednesday night. waves 1 to 3 feet.
.thursday...southwest winds 15 to 20 knots becoming west 5 to
15 knots. a chance of showers. waves 1 to 3 feet. 
.friday...northwest winds 5 to 15 knots becoming northeast. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$