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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat aug 22 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 29.6 inch low should wobble northeastward from the 
central great lakes to southwestern quebec through monday. in 
response to the low's track, a warm front drifts northeastward 
across lake ontario tonight and then a cold front sweeps eastward 
across the lake overnight tonight through sunday. behind the cold 
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.


loz062-230900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt sat aug 22 2026

.overnight...south winds 10 to 15 knots. showers with a
chance of thunderstorms. waves 1 to 2 feet. 
.sunday...southwest winds 15 to 20 knots becoming west. a chance
of waterspouts. showers likely early, then a chance of showers
late in the morning. showers likely with a chance of
thunderstorms in the afternoon. waves 1 to 3 feet building to
3 to 6 feet. 
.sunday night...west winds 15 to 20 knots. a chance of
waterspouts. showers likely with a chance of thunderstorms in the
evening, then showers overnight. waves 4 to 6 feet. 
.monday...southwest winds 15 to 25 knots becoming west. a chance
of waterspouts. showers. waves 5 to 8 feet. waves occasionally
around 10 feet. 
.monday night...west winds 15 to 20 knots. a chance of
waterspouts. showers likely in the evening, then a chance of
showers overnight. waves 4 to 7 feet subsiding to 3 to 6 feet.
waves occasionally around 9 feet. 
.tuesday...west winds 15 to 20 knots diminishing to 10 knots or
less. a chance of waterspouts during the day. showers likely
during the day. waves 2 to 4 feet subsiding to 1 foot or less. 
.wednesday...southwest winds 10 knots or less becoming south.
waves 1 foot or less. 
.thursday...south winds 5 to 10 knots becoming southwest. a
chance of showers and thunderstorms. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt sat aug 22 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 29.6 inch low should wobble northeastward from the 
central great lakes to southwestern quebec through monday. in 
response to the low's track, a warm front drifts northeastward 
across lake ontario tonight and then a cold front sweeps eastward 
across the lake overnight tonight through sunday. behind the cold 
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.


loz063>065-230900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt sat aug 22 2026

.overnight...south winds 15 to 25 knots. showers with a
chance of thunderstorms. waves 1 to 3 feet building to 3 to
5 feet. 
.sunday...south winds 15 to 25 knots becoming west. a chance of
waterspouts. showers with a chance of thunderstorms in the
morning, then a chance of showers and thunderstorms early in the
afternoon. showers with a chance of thunderstorms late. waves
3 to 5 feet building to 3 to 6 feet. 
.sunday night...west winds 15 to 20 knots becoming southwest. a
chance of waterspouts. showers with a chance of thunderstorms in
the evening, then showers overnight. waves 3 to 6 feet building
to 4 to 7 feet. waves occasionally around 9 feet. 
.monday...southwest winds 15 to 25 knots. a chance of
waterspouts. showers. waves 5 to 8 feet building to 6 to 9 feet.
waves occasionally around 11 feet. 
.monday night...west winds 15 to 20 knots. a chance of
waterspouts. showers. waves 5 to 9 feet subsiding to 3 to 6 feet.
waves occasionally around 11 feet. 
.tuesday...west winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of waterspouts. showers during the day, then a
chance of showers tuesday night. waves 3 to 6 feet subsiding to
1 to 3 feet. 
.wednesday...west winds 5 to 15 knots becoming south. waves
2 feet or less. 
.thursday...south winds 5 to 15 knots. a chance of showers during
the day, then showers likely thursday night. waves 2 feet or
less. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
940 pm edt sat aug 22 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 cold front will move east through the area late this evening. a
trough averaging 29.80 will linger over the eastern great lakes 
sunday into monday morning. high pressure 30.00 inches will 
gradually build into the region monday afternoon through tuesday 
before departing to the east on wednesday. low pressure 29.80 
inches moves across the northern great lakes wednesday into 
thursday.


lez061-166>169-230815-
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-
940 pm edt sat aug 22 2026

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

winds and waves higher in and near thunderstorms.

$$