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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat sep 19 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 ridge of high pressure averaging 30.4 inches 
over the lake will slowly drift to the east through tonight. during 
sunday night, a cold front will sweep southward across the lake. 
behind the front, a ridge averaging 30.4 inches should build from 
northern ontario through monday. by monday night through tuesday, a 
low of 30.0 inches should move from near the lower ohio valley 
toward the mid-atlantic states and extend a weak trough averaging 
30.3 inches over the eastern great lakes.


loz062-191500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sat sep 19 2026

.today...east winds 15 to 20 knots. waves 2 to 4 feet. 
.tonight...east winds 15 to 20 knots becoming southeast 5 to
15 knots. a chance of showers after midnight. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.sunday...east winds 10 to 15 knots becoming northeast. showers
likely. waves 1 to 3 feet. 
.sunday night...northeast winds 10 to 15 knots increasing to
15 to 25 knots. waves 1 to 3 feet building to 3 to 5 feet. 
.monday...northeast winds 15 to 25 knots. waves 3 to 6 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.tuesday...east winds 20 to 25 knots. waves 5 to 8 feet. waves
occasionally around 10 feet. 
.wednesday...east winds 15 to 25 knots. a chance of showers.
waves 4 to 7 feet subsiding to 3 to 5 feet. waves occasionally
around 9 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat sep 19 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 ridge of high pressure averaging 30.4 inches 
over the lake will slowly drift to the east through tonight. during 
sunday night, a cold front will sweep southward across the lake. 
behind the front, a ridge averaging 30.4 inches should build from 
northern ontario through monday. by monday night through tuesday, a 
low of 30.0 inches should move from near the lower ohio valley 
toward the mid-atlantic states and extend a weak trough averaging 
30.3 inches over the eastern great lakes.


loz063>065-191500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sat sep 19 2026

.today...east winds 5 to 15 knots becoming northeast. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tonight...east winds 5 to 15 knots becoming southeast. a chance
of showers late. waves 2 feet or less. 
.sunday...southeast winds 10 to 15 knots becoming northeast 15 to
20 knots. showers. waves 1 to 3 feet building to 2 to 4 feet. 
.sunday night...northeast winds 15 to 20 knots. waves 2 to 4 feet
building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots. waves 3 to 6 feet. 
.tuesday...east winds 15 to 25 knots. waves 3 to 6 feet. 
.wednesday...east winds 15 to 20 knots. a chance of showers
wednesday night. 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
342 am edt sat sep 19 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 warm front will nudge north today before a low pressure system 
29.80 inches moves along it and into the southern great lakes region 
saturday night into sunday. on sunday, a strong cold front will push 
southeast through the area before a trough averaging 29.80 inches 
settles over the area through midweek.


lez061-168-169-191415-
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-
342 am edt sat sep 19 2026

.today...east winds 5 to 15 knots. a slight chance of showers
late. waves 1 to 3 feet. 
.tonight...east winds 5 to 15 knots becoming south. a slight
chance of showers and thunderstorms early, then a chance of
showers with a slight chance of thunderstorms late in the
evening. showers with a chance of thunderstorms after midnight.
waves 2 feet or less. 
.sunday...south winds 10 to 15 knots becoming northeast 15 to
20 knots. showers likely with a chance of thunderstorms in the
morning, then a chance of showers in the afternoon. waves 1 to
3 feet building to 2 to 4 feet. 
.sunday night...northeast winds 15 to 25 knots. waves 2 to 4 feet
building to 3 to 6 feet. 
.monday...northeast winds 15 to 25 knots becoming east. waves
5 to 8 feet. waves occasionally around 10 feet. 
.tuesday...east winds to 30 knots. a chance of showers. waves
5 to 8 feet. waves occasionally around 10 feet. 
.wednesday...east winds 15 to 25 knots. a chance of showers.
waves 3 to 6 feet subsiding to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$