FZUS61 KBUF 052003

GLFLO 



Open Lake Forecast for Lake Ontario

National Weather Service Buffalo NY

403 PM EDT Wed Aug 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 high pressure ridge averaging 30.0 inches will drift 

away from the region. A trough and cold front will then ever so 

slowly approach Lake Ontario from the northwest through this weekend.



LOZ062-060300-

Lake Ontario open waters from the Niagara River to Hamlin Beach-

403 PM EDT Wed Aug 5 2026



.TONIGHT...East winds 10 knots or less becoming south. Waves

1 foot or less. 

.THURSDAY...Southwest winds 10 knots or less becoming west. Waves

1 foot or less. 

.THURSDAY NIGHT...Southwest winds 5 to 10 knots becoming light

and variable. Waves 1 foot or less. 

.FRIDAY...Light and variable winds. A chance of showers in the

morning, then showers likely with a chance of thunderstorms in

the afternoon. Waves 1 foot or less. 

.FRIDAY NIGHT...Southeast winds 5 to 10 knots becoming southwest.

Showers likely with a chance of thunderstorms in the evening,

then a chance of showers overnight. Waves 1 foot or less. 

.SATURDAY...Southwest winds 5 to 15 knots becoming west. A chance

of showers and thunderstorms. Waves 1 to 2 feet. 

.SUNDAY...West winds 5 to 15 knots becoming southwest. A chance

of showers Sunday night. Waves 1 to 2 feet. 

.MONDAY...West winds 5 to 10 knots. A chance of showers during

the day, then showers likely Monday night. Waves around 1 foot. 



Winds and waves higher in and near thunderstorms.



$$



LOZ063>065-060300-

Lake Ontario open waters from Hamlin Beach to the Saint Lawrence

River-

403 PM EDT Wed Aug 5 2026



.TONIGHT...Northeast winds 5 to 10 knots becoming south. A chance

of showers late. Waves 1 foot or less. 

.THURSDAY...South winds 5 to 15 knots becoming west. A chance of

showers early. Waves 2 feet or less. 

.THURSDAY NIGHT...South winds 10 knots or less becoming

southwest. Waves 1 foot or less. 

.FRIDAY...Southwest winds 10 knots or less becoming south.

Showers likely with a chance of thunderstorms in the afternoon.

Waves 1 foot or less. 

.FRIDAY NIGHT...South winds 10 knots or less becoming southwest.

Showers likely with a chance of thunderstorms in the evening,

then showers likely overnight. Waves 1 foot or less. 

.SATURDAY...Southwest winds 10 to 15 knots becoming west. Showers

likely with a chance of thunderstorms during the day, then a

chance of showers and thunderstorms Saturday night. Waves 2 feet

or less. 

.SUNDAY...West winds 5 to 15 knots becoming southwest. A chance

of showers Sunday night. Waves 1 to 3 feet. 

.MONDAY...West winds 5 to 10 knots. A chance of showers during

the day, then showers likely with a chance of thunderstorms

Monday night. Waves 1 to 2 feet. 



Winds and waves higher in and near thunderstorms.



$$



LOZ061-060300-

MAFOR 0521/

ONTARIO WEST 1/2 11200 11300 12400 11500 11400 11500 11600. Waves

1 foot or less. 



ONTARIO EAST 1/2 11100 11200 13400 11410 11500 11600. Waves 2

feet or less. 



$$