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open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt mon jul 27 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 29.6 inch low over the western great lakes this 
morning will strengthen to 29.3 inches while moving southeast into 
the lower great lakes tonight and tuesday. a cold front associated 
with this low will swing across the lake late tuesday and tuesday 
night. the low will then weaken to 29.6 inches while drifting east 
into new england by wednesday, before entering the northern atlantic 
thursday and friday. meanwhile a 30.0 inch high will slide across 
the great lakes thursday and friday.


loz062-272100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt mon jul 27 2026

.this afternoon...west winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.tonight...southeast winds 5 to 10 knots becoming south. a chance
of showers and thunderstorms early, then showers with a chance of
thunderstorms from late evening on. waves 1 foot or less. 
.tuesday...southeast winds 10 to 15 knots becoming northeast.
showers with a chance of thunderstorms. waves 1 to 3 feet. 
.tuesday night...north winds 15 to 25 knots. showers with a
chance of thunderstorms in the evening, then showers overnight.
waves 2 to 4 feet building to 3 to 5 feet. 
.wednesday...north winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely. waves 3 to 5 feet subsiding to 2 to
3 feet. 
.thursday...north winds 5 to 15 knots becoming northwest. waves
1 to 3 feet subsiding to 1 foot or less. 
.friday...west winds 10 knots or less becoming southwest. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 271403
glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt mon jul 27 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 29.6 inch low over the western great lakes this 
morning will strengthen to 29.3 inches while moving southeast into 
the lower great lakes tonight and tuesday. a cold front associated 
with this low will swing across the lake late tuesday and tuesday 
night. the low will then weaken to 29.6 inches while drifting east 
into new england by wednesday, before entering the northern atlantic 
thursday and friday. meanwhile a 30.0 inch high will slide across 
the great lakes thursday and friday.


loz063>065-272100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt mon jul 27 2026

.this afternoon...southwest winds 5 to 10 knots becoming
northeast. waves 1 foot or less. 
.tonight...southeast winds 10 knots or less becoming south 10 to
15 knots. a chance of showers and thunderstorms after midnight.
showers likely with a chance of thunderstorms late. waves 2 feet
or less. 
.tuesday...southeast winds 10 to 15 knots becoming east. showers
with a chance of thunderstorms. waves 2 feet or less. 
.tuesday night...northeast winds 15 to 20 knots becoming north.
showers with a chance of thunderstorms in the evening, then
showers overnight. waves 1 to 3 feet building to 3 to 5 feet. 
.wednesday...northeast winds 15 to 20 knots becoming north.
showers. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.thursday...north winds 15 to 20 knots becoming northwest 5 to
15 knots. waves 2 to 4 feet subsiding to 1 foot or less. 
.friday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
918 am edt mon jul 27 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...
low pressure 29.70 inches over the northern great lakes will move
southeast towards the lower great lakes and upper ohio valley
today. the low will deepen to 29.50 inches while dragging a cold 
front southeast across lake erie tonight through tuesday. a trough
averaging 29.80 inches will linger through wednesday before a
ridge averaging 30.00 inches moves over the lower great lakes 
thursday into friday.


lez164>168-272015-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
918 am edt mon jul 27 2026

.rest of today...southwest winds 5 to 10 knots. a slight chance
of showers and thunderstorms late this morning. waves 2 feet or
less. 
.tonight...southwest winds 5 to 15 knots increasing to 15 to
20 knots. a chance of showers and thunderstorms in the evening,
then showers with a chance of thunderstorms after midnight. waves
1 to 3 feet building to 3 to 5 feet. 
.tuesday...west winds 15 to 25 knots becoming northwest to
30 knots. showers in the morning, then a chance of showers in the
afternoon. waves 3 to 6 feet. 
.tuesday night...northwest winds 20 to 25 knots becoming north.
waves 4 to 7 feet. waves occasionally around 9 feet. 
.wednesday...north winds 15 to 25 knots. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.thursday...north winds 5 to 15 knots becoming northwest. waves
1 to 3 feet. 
.friday...southwest winds 10 knots or less becoming south. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
918 am edt mon jul 27 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...
low pressure 29.70 inches over the northern great lakes will move
southeast towards the lower great lakes and upper ohio valley
today. the low will deepen to 29.50 inches while dragging a cold 
front southeast across lake erie tonight through tuesday. a trough
averaging 29.80 inches will linger through wednesday before a
ridge averaging 30.00 inches moves over the lower great lakes 
thursday into friday.


lez061-169-272015-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
918 am edt mon jul 27 2026

.rest of today...southwest winds 5 to 10 knots. a slight chance
of showers late this morning. waves 1 foot or less. 
.tonight...southwest winds 5 to 15 knots. a slight chance of
showers and thunderstorms early, then a chance of showers and
thunderstorms late in the evening. showers with a chance of
thunderstorms after midnight. waves 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots becoming north and
increasing to 15 to 25 knots. showers with a chance of
thunderstorms. waves 2 to 4 feet building to 3 to 5 feet. 
.tuesday night...north winds 15 to 25 knots. showers with a
chance of thunderstorms in the evening, then showers likely
overnight. waves 3 to 5 feet. 
.wednesday...north winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers during the day. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.thursday...north winds 5 to 15 knots becoming northwest. waves
2 feet or less. 
.friday...west winds 10 knots or less becoming south. waves
1 foot or less. 

winds and waves higher in and near thunderstorms.

$$