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open lake forecast for lake ontario
national weather service buffalo ny
403 am edt fri mar 20 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 29.8 inch low over the upper great lakes will push 
southeast across new york state today, before sliding off the east 
coast tonight. a 30.0 inch high will then build across the lake 
saturday, before another 29.6 inch low crosses the lower great lakes 
sunday and slides off the mid-atlantic coast monday. a 30.4 inch 
high is then forecast to build across the upper great lakes monday, 
and the lower great lakes tuesday.


loz062-201500-
lake ontario open waters from the niagara river to hamlin beach-
403 am edt fri mar 20 2026

.today...southeast winds 15 to 20 knots becoming northeast. rain
with snow likely this morning, then rain early this afternoon.
waves 1 to 2 feet building to 2 to 4 feet. 
.tonight...northeast winds 10 to 15 knots becoming northwest.
waves 1 to 3 feet. 
.saturday...northwest winds 5 to 10 knots becoming east. waves
1 foot or less. 
.saturday night...east winds 5 to 10 knots. a chance of rain and
snow overnight. waves 1 foot or less. 
.sunday...east winds 10 to 15 knots becoming northeast 15 to
20 knots. rain likely with a chance of snow during the day, then
rain likely with a chance of snow showers sunday night. waves
1 to 3 feet building to 3 to 5 feet. 
.monday...north winds 15 to 20 knots becoming northwest. a chance
of snow showers during the day. waves 3 to 5 feet subsiding to
1 to 3 feet. 
.tuesday...west winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet. 

$$

fzus61 kbuf 200804
glflo 
expires:202603201500;;994884

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt fri mar 20 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 29.8 inch low over the upper great lakes will push 
southeast across new york state today, before sliding off the east 
coast tonight. a 30.0 inch high will then build across the lake 
saturday, before another 29.6 inch low crosses the lower great lakes 
sunday and slides off the mid-atlantic coast monday. a 30.4 inch 
high is then forecast to build across the upper great lakes monday, 
and the lower great lakes tuesday.


loz063-064-201500-
lake ontario open waters from hamlin beach to mexico bay-
403 am edt fri mar 20 2026

.today...south winds 10 to 15 knots becoming north 15 to
20 knots. rain with snow likely this morning, then rain this
afternoon. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.tonight...northeast winds 10 to 15 knots becoming north. waves
1 to 3 feet. 
.saturday...northwest winds 5 to 10 knots becoming north. waves
1 foot or less. 
.saturday night...east winds 5 to 10 knots becoming southeast.
rain and snow likely overnight. waves 2 feet or less. 
.sunday...southeast winds 10 to 15 knots becoming northeast 15 to
20 knots. rain and snow likely during the day, then rain likely
with a chance of snow showers sunday night. waves 1 to 3 feet
building to 3 to 6 feet. 
.monday...north winds 15 to 20 knots becoming northwest. a chance
of snow showers during the day. waves 3 to 6 feet subsiding to
2 to 4 feet. 
.tuesday...northwest winds 15 to 20 knots becoming west. a chance
of rain and snow showers tuesday night. waves 2 to 4 feet
building to 3 to 6 feet. 

$$

fzus61 kbuf 200804
glflo 
expires:202603201500;;994885

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt fri mar 20 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 29.8 inch low over the upper great lakes will push 
southeast across new york state today, before sliding off the east 
coast tonight. a 30.0 inch high will then build across the lake 
saturday, before another 29.6 inch low crosses the lower great lakes 
sunday and slides off the mid-atlantic coast monday. a 30.4 inch 
high is then forecast to build across the upper great lakes monday, 
and the lower great lakes tuesday.


loz065-201500-
lake ontario open waters from mexico bay to the saint lawrence
river-
403 am edt fri mar 20 2026

.today...southeast winds 5 to 10 knots becoming northeast and
increasing to 15 to 20 knots. snow and rain. rain likely late.
waves 1 to 3 feet. 
.tonight...northeast winds 10 to 15 knots becoming north. waves
2 feet or less. 
.saturday...northwest winds 5 to 10 knots. waves 1 foot or less. 
.saturday night...south winds 10 knots or less becoming
southeast. snow and rain likely overnight. waves 1 foot or less. 
.sunday...southeast winds 10 to 15 knots becoming northeast 15 to
20 knots. rain and snow likely during the day, then a chance of
rain and snow showers sunday night. waves 1 to 3 feet building to
2 to 4 feet. 
.monday...north winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of snow showers during the day. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.tuesday...northwest winds 10 to 15 knots becoming west 15 to
20 knots. a chance of snow showers tuesday night. waves 1 to
3 feet building to 3 to 6 feet. 

$$