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open lake forecast for lake ontario
national weather service buffalo ny
404 am edt sat apr 4 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 29.4 inch surface low will track through the central 
great lakes today, then into quebec tonight and sunday, while 
dragging a strong cold front across the lake early tonight, with a 
secondary cold front then following sunday night 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.


loz062-041500-
lake ontario open waters from the niagara river to hamlin beach-
404 am edt sat apr 4 2026

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

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
404 am edt sat apr 4 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 29.4 inch surface low will track through the central 
great lakes today, then into quebec tonight and sunday, while 
dragging a strong cold front across the lake early tonight, with a 
secondary cold front then following sunday night 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.


loz063>065-041500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
404 am edt sat apr 4 2026

.today...northeast winds 10 to 15 knots becoming east 15 to
20 knots. a chance of rain showers this afternoon. waves 1 to
3 feet building to 2 to 4 feet. 
.tonight...southeast winds 15 to 25 knots becoming southwest to
30 knots. a chance of showers and thunderstorms early, then
showers likely with a chance of thunderstorms late in the
evening. showers with a chance of thunderstorms after midnight.
waves 2 to 4 feet building to 5 to 8 feet. waves occasionally
around 10 feet. 
.sunday...west winds 15 to 25 knots increasing to 30 knots. rain
showers in the morning, then a chance of rain showers in the
afternoon. waves 3 to 6 feet building to 5 to 9 feet. waves
occasionally around 11 feet. 
.sunday night...west winds to 30 knots diminishing to 15 to
25 knots. a chance of rain showers in the evening. waves 6 to
10 feet. waves occasionally around 13 feet. 
.monday...west winds 15 to 20 knots becoming northwest. a chance
of rain and snow showers during the day, then snow and rain
showers likely monday night. waves 4 to 7 feet subsiding to 1 to
3 feet. waves occasionally around 9 feet. 
.tuesday...north winds 15 to 25 knots becoming northwest and
diminishing to 10 to 15 knots. snow showers likely during the
day. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.wednesday...south winds 5 to 10 knots increasing to 30 knots.
waves 2 feet or less building to 5 to 8 feet. waves occasionally
around 10 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
339 am edt sat apr 4 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 move north across the lake this morning as low
pressure 29.60 inches moves northeast through the great lakes
dragging a cold front through late this evening. a trough
averaging 30.00 inches will linger over lake erie through monday.
high pressure 30.50 will build across the region for tuesday into
wednesday. 


lez061-168-169-041415-
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-
339 am edt sat apr 4 2026

.today...northeast winds 5 to 15 knots becoming southeast. a
chance of rain showers with a slight chance of thunderstorms this
morning, then a slight chance of rain showers and thunderstorms
early this afternoon. a chance of rain showers and thunderstorms
late. waves 1 to 3 feet. 
.tonight...south winds 10 to 15 knots becoming west. showers with
a chance of thunderstorms in the evening, then showers after
midnight. waves 1 to 3 feet building to 2 to 4 feet. 
.sunday...west winds 15 to 20 knots. waves 2 to 4 feet building
to 3 to 6 feet. 
.sunday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of snow showers overnight. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.monday...west winds 10 to 15 knots becoming northwest 15 to
20 knots. a chance of rain showers during the day, then a chance
of rain and snow showers monday night. waves 1 to 3 feet building
to 3 to 5 feet. 
.tuesday...northwest winds 15 to 20 knots becoming south and
diminishing to less than 10 knots. waves 3 to 5 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. 

winds and waves higher in and near thunderstorms.

$$