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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt tue jun 9 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 30.2 inch high over the new england coast will track 
offshore today, where it will then remain anchored through thursday. 
meanwhile a 29.7 inch low will track from lower michigan to southern 
quebec tonight and wednesday, with another 29.7 inch trough crossing 
the lake late friday. a cold front will then cross the lake late 
saturday.


loz062-091500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt tue jun 9 2026

.today...east winds 5 to 15 knots. a chance of showers and
thunderstorms late. waves 1 foot or less. 
.tonight...south winds 15 to 20 knots becoming southeast 5 to
15 knots. a chance of showers and thunderstorms through the early
overnight, then showers likely with a chance of thunderstorms
late. waves 1 foot or less. 
.wednesday...south winds 5 to 15 knots becoming southwest.
showers likely with a chance of thunderstorms. waves 2 feet or
less. 
.wednesday night...southwest winds 5 to 15 knots. a chance of
showers and thunderstorms in the evening, then showers likely
overnight. waves 1 to 2 feet. 
.thursday...southwest winds 5 to 15 knots. showers likely during
the day, then a chance of showers thursday night. waves 1 to
2 feet. 
.friday...southwest winds 10 to 15 knots becoming west. showers
likely with a chance of thunderstorms. waves 1 to 3 feet. 
.saturday...west winds 10 to 15 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 090802
glflo 
expires:202606091500;;432369

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt tue jun 9 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 30.2 inch high over the new england coast will track 
offshore today, where it will then remain anchored through thursday. 
meanwhile a 29.7 inch low will track from lower michigan to southern 
quebec tonight and wednesday, with another 29.7 inch trough crossing 
the lake late friday. a cold front will then cross the lake late 
saturday.


loz063>065-091500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt tue jun 9 2026

.today...southeast winds 15 to 20 knots becoming northeast 5 to
15 knots. a chance of showers and thunderstorms late. waves
2 feet or less. 
.tonight...northeast winds 15 to 20 knots becoming southeast and
diminishing to around 10 knots. a chance of showers and
thunderstorms early, then a chance of showers. a chance of
showers and thunderstorms late. waves 1 foot or less. 
.wednesday...southeast winds 5 to 15 knots becoming south.
showers with a chance of thunderstorms. waves 2 feet or less. 
.wednesday night...southwest winds 5 to 10 knots. showers likely
with a chance of thunderstorms in the evening, then showers
likely overnight. waves 2 feet or less. 
.thursday...southwest winds 5 to 10 knots. showers likely during
the day, then a chance of showers thursday night. waves 2 feet or
less. 
.friday...south winds 5 to 15 knots becoming west. showers with a
chance of thunderstorms. waves 2 feet or less. 
.saturday...west winds 5 to 15 knots. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 am edt tue jun 9 2026


slz022-024-091500-
saint lawrence river from cape vincent to saint regis
402 am edt tue jun 9 2026

.today...light and variable winds becoming west 5 to 10 knots.
mostly sunny. 
.tonight...west winds 10 knots or less becoming south. a chance
of showers after midnight. 
.wednesday...south winds 5 to 10 knots. showers likely in the
morning, then showers with a chance of thunderstorms in the
afternoon. 
.wednesday night...south winds 10 knots or less becoming
southwest. showers with a chance of thunderstorms in the evening,
then showers overnight. 
.thursday...southwest winds 10 knots or less. a chance of
showers. 
.friday...southwest winds 5 to 10 knots. showers likely with a
chance of thunderstorms. 
.saturday...southwest winds 10 knots or less. mainly clear, then
becoming partly cloudy. 

winds and waves higher in and near thunderstorms.

$$