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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1010 am edt sun mar 29 2026


slz022-024-292100-
saint lawrence river from cape vincent to saint regis
1010 am edt sun mar 29 2026

.this afternoon...southwest winds 10 to 15 knots. cloudy.
.tonight...southwest winds 5 to 15 knots becoming south. mostly
cloudy. 
.monday...southwest winds 5 to 15 knots. partly sunny in the
morning, then becoming mostly cloudy. 
.monday night...southwest winds 10 knots or less becoming
northeast. rain showers likely overnight. 
.tuesday...northeast winds 10 to 15 knots becoming southwest.
rain showers. 
.wednesday...west winds 5 to 15 knots becoming north. rain
showers during the day. 
.thursday...northeast winds 5 to 10 knots. a chance of snow
showers during the day, then snow and rain showers likely
thursday night. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1009 am edt sun mar 29 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 strong 30.7 inch high over the ohio valley will move 
off the mid atlantic coast today. a 30.0 inch trough will sag 
southward across eastern canada monday, then move across the eastern 
great lakes monday night, followed by a deeper 29.5 inch low tuesday 
night into early wednesday. another 30.7 inch high across quebec is 
then forecast to extend down across the lake thursday.


loz062-292100-
lake ontario open waters from the niagara river to hamlin beach-
1009 am edt sun mar 29 2026

.this afternoon...southwest winds 15 to 20 knots. waves 2 to
4 feet. 
.tonight...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.monday...southwest winds 10 to 15 knots. waves 2 to 3 feet. 
.monday night...southwest winds 10 to 15 knots becoming south. a
chance of showers in the evening, then showers overnight. waves
1 to 3 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest. showers
with a chance of thunderstorms. waves 2 to 4 feet building to
3 to 6 feet. 
.wednesday...west winds 15 to 20 knots becoming northeast. rain
showers during the day, then a chance of rain showers wednesday
night. waves 3 to 6 feet subsiding to 3 to 5 feet. 
.thursday...northeast winds to 30 knots becoming east. a chance
of rain and snow showers during the day, then rain and snow
showers likely thursday night. waves 5 to 8 feet building to 6 to
10 feet. waves occasionally around 13 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1009 am edt sun mar 29 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 strong 30.7 inch high over the ohio valley will move 
off the mid atlantic coast today. a 30.0 inch trough will sag 
southward across eastern canada monday, then move across the eastern 
great lakes monday night, followed by a deeper 29.5 inch low tuesday 
night into early wednesday. another 30.7 inch high across quebec is 
then forecast to extend down across the lake thursday.


loz063>065-292100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1009 am edt sun mar 29 2026

.this afternoon...southwest winds 15 to 20 knots diminishing to
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...southwest winds 5 to 15 knots becoming south. waves
1 to 3 feet. 
.monday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.monday night...southwest winds 5 to 15 knots becoming southeast.
a chance of rain showers in the evening, then rain showers likely
overnight. waves 1 to 3 feet. 
.tuesday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. showers with a chance of thunderstorms. waves 1 to
3 feet building to 3 to 6 feet. 
.wednesday...west winds 15 to 20 knots becoming northeast. rain
showers with a chance of thunderstorms during the day, then a
chance of rain showers wednesday night. waves 3 to 6 feet
subsiding to 3 to 5 feet. 
.thursday...northeast winds 15 to 25 knots becoming east. a
chance of rain and snow showers during the day, then rain and
snow showers likely thursday night. waves 3 to 6 feet building to
5 to 8 feet. waves occasionally around 10 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
930 am edt sun mar 29 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 30.50 inches will shift off the east coast today 
and tonight. a cold front will approach from the northwest monday 
into tuesday before moving across the lake tuesday night. low 
pressure 30.10 will lift into the ohio valley late in the week as 
the cold front stalls and waivers across the region.


lez061-168-169-292015-
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-
930 am edt sun mar 29 2026

.this afternoon...southwest winds 5 to 15 knots. waves 2 feet or
less. 
.tonight...south winds 5 to 15 knots becoming southwest. waves
1 to 3 feet. 
.monday...southwest winds 10 to 15 knots. waves 1 to 3 feet. 
.monday night...southwest winds 5 to 15 knots. rain likely. waves
1 to 3 feet. 
.tuesday...southwest winds 15 to 20 knots. rain likely during the
day, then rain with a chance of thunderstorms tuesday night.
waves 3 to 5 feet. 
.wednesday...west winds 10 to 15 knots becoming northeast 15 to
20 knots. a chance of rain. waves 3 to 5 feet subsiding to 2 to
4 feet. 
.thursday...northeast winds 15 to 20 knots becoming east. a
chance of rain during the day, then rain likely thursday night.
waves 3 to 6 feet. 

winds and waves higher in and near thunderstorms.

$$