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open lake forecast for lake ontario
national weather service buffalo ny
409 am edt sun apr 5 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 29.3 inch surface low near southwest quebec this early 
morning will carry a cold front from just east of the lake to new 
england today. a secondary cold front then follow and cross the lake 
tonight and monday. a 30.5 inch high will then build across the 
great lakes tuesday and tuesday night, before sliding east and off 
the new england coast wednesday. a 29.6 inch surface low will then 
track northeast across the ontario province, dragging a pair of 
fronts, warm then cold, across the lake thursday.


loz062-051500-
lake ontario open waters from the niagara river to hamlin beach-
410 am edt sun apr 5 2026

.today...west winds 15 to 25 knots. waves 3 to 6 feet building to
5 to 7 feet. waves occasionally around 9 feet. 
.tonight...west winds 15 to 25 knots. waves 4 to 7 feet subsiding
to 3 to 6 feet. waves occasionally around 9 feet. 
.monday...west winds 15 to 20 knots diminishing to 5 to 15 knots.
a chance of rain and snow showers in the afternoon. waves 3 to
5 feet subsiding to 1 to 3 feet. 
.monday night...west winds 5 to 15 knots becoming northwest and
increasing to 15 to 25 knots. snow showers with rain showers
likely. waves 1 to 2 feet building to 3 to 5 feet. 
.tuesday...northwest winds 15 to 25 knots becoming west and
diminishing to 5 to 15 knots. snow showers likely during the day.
waves 4 to 6 feet subsiding to 1 to 3 feet. 
.wednesday...south winds 5 to 15 knots increasing to 15 to
25 knots. waves 2 feet or less building to 3 to 5 feet. 
.thursday...southwest winds 15 to 25 knots. a chance of showers.
waves 3 to 6 feet subsiding to 2 to 4 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
409 am edt sun apr 5 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 29.3 inch surface low near southwest quebec this early 
morning will carry a cold front from just east of the lake to new 
england today. a secondary cold front then follow and cross the lake 
tonight and monday. a 30.5 inch high will then build across the 
great lakes tuesday and tuesday night, before sliding east and off 
the new england coast wednesday. a 29.6 inch surface low will then 
track northeast across the ontario province, dragging a pair of 
fronts, warm then cold, across the lake thursday.


loz063>065-051500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
410 am edt sun apr 5 2026

.today...west winds 15 to 25 knots. rain showers likely early.
waves 3 to 6 feet building to 5 to 8 feet. waves occasionally
around 10 feet. 
.tonight...west winds 15 to 25 knots. waves 6 to 9 feet. waves
occasionally around 11 feet. 
.monday...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 4 to 7 feet subsiding to 1 to 3 feet. waves
occasionally around 9 feet. 
.monday night...west winds 5 to 10 knots becoming northwest and
increasing to 15 to 20 knots. a chance of rain and snow showers
in the evening, then snow and rain showers likely overnight.
waves 1 to 3 feet building to 3 to 5 feet. 
.tuesday...northwest winds 15 to 25 knots becoming west and
diminishing to 10 to 15 knots. snow showers likely during the
day. waves 4 to 7 feet subsiding to 2 to 4 feet. waves
occasionally around 9 feet. 
.wednesday...south winds 5 to 10 knots increasing to 30 knots.
waves 1 to 3 feet building to 4 to 7 feet. waves occasionally
around 9 feet. 
.thursday...south winds to 30 knots becoming southwest 15 to
25 knots. a chance of rain showers. waves 5 to 8 feet subsiding
to 3 to 6 feet. waves occasionally around 10 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
357 am edt sun apr 5 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 of 29.90 inches will remain over lake erie today. low 
pressure 29.90 inches moves east across the great lakes monday,
pulling another cold front across the lake. high pressure of 
30.60 inches will build across the great lakes region tuesday. a 
warm front will lift north across lake erie on wednesday as low 
pressure of 29.60 inches approaches lake superior. this system 
will pull a cold front south across lake erie thursday night as 
the low continues northeast into quebec. 


lez061-168-169-051430-
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-
357 am edt sun apr 5 2026

.today...southwest winds 15 to 25 knots becoming west. a slight
chance of rain and snow showers late. waves 3 to 6 feet building
to 5 to 7 feet. waves occasionally around 9 feet. 
.tonight...west winds 15 to 20 knots diminishing to 10 to
15 knots. a slight chance of rain and snow showers in the
evening. a slight chance of snow showers late. waves 4 to 7 feet
subsiding to 2 to 4 feet. waves occasionally around 9 feet. 
.monday...west winds around 10 knots. a chance of snow and rain
showers in the morning, then rain and snow showers likely in the
afternoon. waves 1 to 2 feet. 
.monday night...west winds 10 to 15 knots becoming northwest
15 to 20 knots. rain and snow showers likely in the evening, then
a chance of snow and rain showers likely overnight. waves 1 to
3 feet building to 3 to 6 feet. 
.tuesday...northwest winds 15 to 20 knots becoming south and
diminishing to less than 10 knots. a chance of snow showers
during the day. waves 3 to 6 feet subsiding to 1 foot or less. 
.wednesday...southeast winds 5 to 10 knots becoming south and
increasing to 15 to 25 knots. waves 2 feet or less building to
3 to 5 feet. 
.thursday...south winds 15 to 25 knots becoming southwest and
diminishing to 10 to 15 knots. a chance of showers thursday
night. waves 3 to 6 feet subsiding to 1 to 3 feet. 

$$