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open lake forecast for lake ontario
national weather service buffalo ny
403 am edt mon mar 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 frontal zone will stall near the lake tonight through 
tuesday. a 29.6 inch low will then move across southern ontario 
province tuesday evening before reaching the canadian maritimes 
wednesday, with a trailing cold front moving south across the lake. 
a 30.6 inch high will then build east across ontario and quebec 
wednesday through thursday. a 29.6 inch low is then forecast to move 
into the central great lakes thursday night before reaching southern 
quebec late friday.


loz062-301500-
lake ontario open waters from the niagara river to hamlin beach-
403 am edt mon mar 30 2026

.today...southwest winds 10 to 15 knots. waves 1 foot or less
building to 1 to 3 feet. 
.tonight...southwest winds 5 to 15 knots becoming east. a chance
of showers late in the evening. showers with a chance of
thunderstorms after midnight. waves 1 to 3 feet. 
.tuesday...east winds 10 to 15 knots becoming southeast 15 to
20 knots. rain showers with a chance of thunderstorms. waves 1 to
3 feet building to 2 to 4 feet. 
.tuesday night...south winds 15 to 20 knots becoming west.
showers with a chance of thunderstorms. waves 2 to 4 feet
building to 3 to 6 feet. 
.wednesday...northwest winds 15 to 25 knots becoming northeast.
rain showers likely during the day, then a chance of rain and
snow showers wednesday night. waves 3 to 5 feet building to 3 to
6 feet. 
.thursday...east winds to 30 knots becoming southeast. rain and
snow showers during the day, then rain showers thursday night.
waves 5 to 9 feet. waves occasionally around 11 feet. 
.friday...south winds 15 to 25 knots becoming north and
diminishing to 10 to 15 knots. showers during the day, then a
chance of showers friday night. waves 3 to 6 feet subsiding to
2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
403 am edt mon mar 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 frontal zone will stall near the lake tonight through 
tuesday. a 29.6 inch low will then move across southern ontario 
province tuesday evening before reaching the canadian maritimes 
wednesday, with a trailing cold front moving south across the lake. 
a 30.6 inch high will then build east across ontario and quebec 
wednesday through thursday. a 29.6 inch low is then forecast to move 
into the central great lakes thursday night before reaching southern 
quebec late friday.


loz063>065-301500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 am edt mon mar 30 2026

.today...south winds 10 to 15 knots becoming southwest. waves
1 to 3 feet. 
.tonight...southwest winds 5 to 10 knots becoming northeast. a
chance of rain showers late in the evening. rain showers after
midnight, then rain showers with a chance of thunderstorms late.
waves 1 to 3 feet. 
.tuesday...northeast winds 5 to 15 knots becoming east. rain
showers with a chance of thunderstorms. waves 2 feet or less. 
.tuesday night...south winds 10 to 15 knots becoming west 15 to
20 knots. rain showers with a chance of thunderstorms. waves
2 feet or less building to 3 to 6 feet. 
.wednesday...west winds 15 to 20 knots becoming northeast. rain
showers during the day, then a chance of rain and snow showers
wednesday night. waves 3 to 6 feet subsiding to 3 to 5 feet. 
.thursday...northeast winds 15 to 25 knots becoming southeast.
rain and snow showers during the day, then rain showers thursday
night. waves 4 to 7 feet. waves occasionally around 9 feet. 
.friday...south winds 15 to 25 knots becoming north. rain
showers. waves 3 to 6 feet subsiding to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
929 am edt mon mar 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...
a warm front will cross the lake today and remain north of the
lake through tuesday. low pressure 29.70 inches will enter the
great lakes on tuesday night and extend a cold front across the
lake by wednesday morning. this front will linger south of the
lake on wednesday and lift north of the lake on thursday. low
pressure 29.50 inches will enter the western lakes on thursday
night and extend a cold front across the lake on friday.


lez061-168-169-302015-
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-
929 am edt mon mar 30 2026

.this afternoon...southwest winds 10 to 15 knots. a chance of
showers late. waves 1 to 3 feet. 
.tonight...southwest winds 10 to 15 knots increasing to 15 to
20 knots. showers with a slight chance of thunderstorms in the
evening, then showers with a chance of thunderstorms after
midnight. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday...southwest winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely with a chance of thunderstorms in the
morning, then a chance of showers in the afternoon. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.tuesday night...southwest winds 15 to 20 knots becoming west.
showers with a chance of thunderstorms. waves 3 to 5 feet. 
.wednesday...northwest winds 5 to 15 knots becoming northeast
15 to 20 knots. a chance of rain showers during the day, then
rain showers likely wednesday night. waves 2 to 4 feet. 
.thursday...northeast winds 15 to 20 knots becoming south. rain
showers likely during the day, then rain likely thursday night.
waves 2 to 4 feet. 
.friday...southwest winds 15 to 20 knots becoming east 5 to
15 knots. rain likely during the day, then a chance of rain
friday night. waves 2 to 4 feet subsiding to 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$