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open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt sat mar 21 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 30.1 inch high will build across the lake today. a 
29.6 inch low will then cross the lower great lakes sunday before 
sliding off the mid-atlantic coast monday. a 30.4 inch high is 
forecast to build across the upper great lakes monday, then move to 
the lower great lakes tuesday while strengthening to 30.5 inches. a 
29.8 inch low tracking across quebec will then push its associated 
cold front across the lake on wednesday.


loz062-220300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt sat mar 21 2026

.tonight...east winds 10 to 15 knots increasing to 15 to
20 knots. a chance of rain showers after midnight. waves 2 feet
or less building to 3 to 5 feet. 
.sunday...northeast winds 10 to 15 knots. a chance of rain
showers early, then rain showers likely. a chance of rain and
snow showers late. waves 2 to 4 feet subsiding to 1 to 2 feet. 
.sunday night...northeast winds 10 to 15 knots. waves 1 to
3 feet. 
.monday...north winds 10 to 15 knots becoming northwest. waves
1 to 3 feet. 
.monday night...northwest winds 5 to 15 knots. waves 1 to 2 feet.
.tuesday...west winds 5 to 15 knots increasing to 15 to 20 knots.
waves 1 to 3 feet building to 2 to 4 feet. 
.wednesday...west winds 15 to 20 knots becoming east. a chance of
rain and snow showers wednesday night. waves 3 to 5 feet
subsiding to 2 to 4 feet. 
.thursday...southeast winds 15 to 25 knots becoming northwest.
rain showers likely with a chance of snow showers. waves 3 to
6 feet building to 4 to 7 feet. waves occasionally around 9 feet.

$$

fzus61 kbuf 212003
glflo 
expires:202603220300;;074293

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt sat mar 21 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 30.1 inch high will build across the lake today. a 
29.6 inch low will then cross the lower great lakes sunday before 
sliding off the mid-atlantic coast monday. a 30.4 inch high is 
forecast to build across the upper great lakes monday, then move to 
the lower great lakes tuesday while strengthening to 30.5 inches. a 
29.8 inch low tracking across quebec will then push its associated 
cold front across the lake on wednesday.


loz063-064-220300-
lake ontario open waters from hamlin beach to mexico bay-
403 pm edt sat mar 21 2026

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

$$

fzus61 kbuf 212003
glflo 
expires:202603220300;;074294

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt sat mar 21 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 30.1 inch high will build across the lake today. a 
29.6 inch low will then cross the lower great lakes sunday before 
sliding off the mid-atlantic coast monday. a 30.4 inch high is 
forecast to build across the upper great lakes monday, then move to 
the lower great lakes tuesday while strengthening to 30.5 inches. a 
29.8 inch low tracking across quebec will then push its associated 
cold front across the lake on wednesday.


loz065-220300-
lake ontario open waters from mexico bay to the saint lawrence
river-
403 pm edt sat mar 21 2026

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

$$

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open lake forecast for lake erie
national weather service cleveland oh
340 pm edt sat mar 21 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...
high pressure 30.00 inches today gives way to a warm front
tonight, followed by a strong cold front sunday. high pressure
30.40 inches builds in after sunday for monday night and tuesday.
another warm front arrives wednesday, before becoming near
stationary across the region through thursday.


lez061-168-169-220215-
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-
340 pm edt sat mar 21 2026

.tonight...east winds 5 to 15 knots becoming southwest. a slight
chance of rain showers late. waves 2 feet or less. 
.sunday...southwest winds 5 to 15 knots becoming northwest. a
chance of rain showers in the morning, then rain showers likely
in the afternoon. waves 2 feet or less. 
.sunday night...north winds 15 to 20 knots becoming northeast.
rain showers likely in the evening, then a chance of rain and
snow showers overnight. waves 1 to 3 feet. 
.monday...north winds 5 to 15 knots becoming northwest. waves
1 to 3 feet. 
.monday night...northwest winds 10 knots or less becoming north.
waves 2 feet or less. 
.tuesday...south winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.wednesday...south winds 5 to 10 knots becoming southeast. waves
1 to 3 feet subsiding to 1 foot or less. 
.thursday...south winds 10 to 15 knots becoming north 15 to
20 knots. a chance of rain. waves 1 to 3 feet building to 2 to
4 feet. 

winds and waves higher in and near thunderstorms.

$$