290
FZUS51 KBUF 210803
NSHBUF

Nearshore Marine Forecast
National Weather Service Buffalo NY
403 AM EDT Thu Aug 21 2025

For waters within five nautical miles of shore

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.

LEZ020-211500-
Upper Niagara River and Buffalo Harbor-
403 AM EDT Thu Aug 21 2025

.TODAY...Northeast winds 5 to 10 knots. Mostly cloudy this
morning, then becoming partly sunny.
.TONIGHT...Northeast winds 5 to 10 knots becoming light and
variable. Mainly clear.
.FRIDAY...Light and variable winds. Sunny.
.FRIDAY NIGHT...South winds less than 10 knots. Mainly clear in
the evening, then becoming partly cloudy.
.SATURDAY...South winds 10 knots or less becoming southwest.
Showers likely with a chance of thunderstorms Saturday night.
.SUNDAY...Southwest winds 10 knots or less. Showers likely during
the day, then a chance of showers Sunday night.
.MONDAY...West winds 5 to 10 knots. A chance of showers.

Winds and waves higher in and near thunderstorms.

The water temperature off Buffalo is 76 degrees.

$$

LOZ030-211500-
Lower Niagara River-
403 AM EDT Thu Aug 21 2025

.TODAY...Northeast winds 5 to 10 knots. Mostly cloudy this
morning, then becoming mostly sunny.
.TONIGHT...Northeast winds 5 to 10 knots becoming light and
variable. Mainly clear.
.FRIDAY...Light and variable winds. Sunny.
.FRIDAY NIGHT...East winds less than 10 knots. Mainly clear in
the evening, then becoming partly cloudy.
.SATURDAY...Southwest winds 5 to 10 knots. Showers likely with a
chance of thunderstorms Saturday night.
.SUNDAY...Southwest winds 10 knots or less. Showers likely during
the day, then a chance of showers Sunday night.
.MONDAY...West winds 5 to 10 knots. A chance of showers.

Winds and waves higher in and near thunderstorms.

$$

LEZ041-211500-
Dunkirk to Buffalo along Lake Erie-
403 AM EDT Thu Aug 21 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...Northeast winds 15 to 20 knots diminishing to 10 to
15 knots. Mostly cloudy this morning, then becoming partly sunny.
Waves 1 to 3 feet.
.TONIGHT...Northeast winds 5 to 15 knots becoming east less than
10 knots. Mainly clear. Waves 2 feet or less.
.FRIDAY...Light and variable winds. Sunny. Waves 1 foot or less.
.FRIDAY NIGHT...Light and variable winds becoming south 5 to
10 knots. Mainly clear. Waves 1 foot or less.
.SATURDAY...South winds 5 to 10 knots becoming southwest. Showers
likely with a chance of thunderstorms Saturday night. Waves
2 feet or less.
.SUNDAY...Southwest winds 5 to 15 knots. Showers likely during
the day, then a chance of showers Sunday night. Waves 1 to
2 feet.
.MONDAY...West winds 5 to 15 knots. A chance of showers. Waves
1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LEZ040-211500-
Ripley to Dunkirk along Lake Erie-
403 AM EDT Thu Aug 21 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...Northeast winds 15 to 20 knots diminishing to 10 to
15 knots. Areas of drizzle early. Waves 2 to 4 feet subsiding to
1 to 3 feet.
.TONIGHT...Northeast winds 5 to 15 knots becoming east less than
10 knots. Becoming mainly clear. Waves 1 to 3 feet subsiding to
1 foot or less.
.FRIDAY...Southeast winds less than 10 knots becoming north.
Sunny. Waves 1 foot or less.
.FRIDAY NIGHT...Northeast winds 10 knots or less becoming south.
Mainly clear. Waves 1 foot or less.
.SATURDAY...South winds 5 to 10 knots becoming southwest. Showers
likely with a chance of thunderstorms Saturday night. Waves
2 feet or less.
.SUNDAY...Southwest winds 5 to 10 knots becoming west. Showers
likely during the day, then a chance of showers Sunday night.
Waves 1 to 2 feet.
.MONDAY...West winds 10 to 15 knots. A chance of showers. Waves
1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ042-211500-
Niagara River to Hamlin Beach along Lake Ontario-
403 AM EDT Thu Aug 21 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...East winds 15 to 20 knots. Mostly cloudy this morning,
then becoming mostly sunny. Waves 3 to 6 feet subsiding to 2 to
4 feet. Waves occasionally around 7 feet.
.TONIGHT...East winds 10 knots or less becoming northwest. Mainly
clear. Waves 1 to 3 feet subsiding to 1 foot or less.
.FRIDAY...Northwest winds less than 10 knots becoming north.
Sunny. Waves 1 foot or less.
.FRIDAY NIGHT...Southeast winds 10 knots or less becoming south.
Mainly clear in the evening, then becoming partly cloudy. Waves
1 foot or less.
.SATURDAY...Southwest winds 5 to 10 knots. Showers likely with a
chance of thunderstorms Saturday night. Waves 2 feet or less.
.SUNDAY...Southwest winds 5 to 15 knots becoming west. Showers
likely during the day, then a chance of showers Sunday night.
Waves 2 feet or less.
.MONDAY...West winds 10 to 15 knots. A chance of showers. Waves
1 to 3 feet building to 2 to 4 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ043-211500-
Hamlin Beach to Sodus Bay along Lake Ontario
including Irondequoit Bay-
403 AM EDT Thu Aug 21 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.TODAY...East winds 15 to 20 knots becoming northeast 5 to
15 knots. Cloudy this morning, then becoming mostly sunny. Waves
2 to 4 feet subsiding to 1 to 3 feet.
.TONIGHT...Northeast winds 10 knots or less becoming north.
Mainly clear. Waves 2 feet or less.
.FRIDAY...North winds less than 10 knots. Sunny. Waves 1 foot or
less.
.FRIDAY NIGHT...Light and variable winds becoming south 5 to
10 knots. Mainly clear in the evening, then becoming partly
cloudy. Waves 1 foot or less.
.SATURDAY...South winds 5 to 10 knots becoming southwest. Showers
with a chance of thunderstorms Saturday night. Waves 1 foot or
less.
.SUNDAY...Southwest winds 5 to 10 knots. Showers with a chance of
thunderstorms. Waves 2 feet or less.
.MONDAY...West winds 5 to 15 knots. A chance of showers. Waves
1 to 3 feet.

Winds and waves higher in and near thunderstorms.

The water temperature off Rochester is 46 degrees.

$$

LOZ044-211500-
Sodus Bay to Mexico Bay along Lake Ontario-
403 AM EDT Thu Aug 21 2025

.TODAY...East winds 5 to 15 knots becoming north. Mostly cloudy
this morning, then clearing. Waves 1 to 2 feet.
.TONIGHT...Northwest winds 10 knots or less becoming east. Mainly
clear. Waves 1 foot or less.
.FRIDAY...Southeast winds less than 10 knots. Sunny. Waves 1 foot
or less.
.FRIDAY NIGHT...West winds 10 knots or less becoming south.
Mainly clear. Waves 1 foot or less.
.SATURDAY...South winds 5 to 15 knots. Showers with a chance of
thunderstorms Saturday night. Waves 2 feet or less.
.SUNDAY...South winds 5 to 15 knots becoming southwest. Showers
with a chance of thunderstorms. Waves 2 feet or less.
.MONDAY...Southwest winds 5 to 15 knots becoming west. A chance
of showers. Waves 1 to 3 feet building to 2 to 4 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ045-211500-
Mexico Bay to the Saint Lawrence River along Lake Ontario-
403 AM EDT Thu Aug 21 2025

.TODAY...Northeast winds 5 to 10 knots becoming north. Mostly
sunny. Waves 1 foot or less.
.TONIGHT...North winds 10 knots or less becoming northeast.
Mainly clear. Waves 1 foot or less.
.FRIDAY...Northeast winds 10 knots or less becoming west. Sunny.
Waves 1 foot or less.
.FRIDAY NIGHT...West winds 10 knots or less becoming south.
Mainly clear. Waves 1 foot or less.
.SATURDAY...South winds 5 to 15 knots increasing to 15 to
20 knots. Showers with a chance of thunderstorms Saturday night.
Waves 1 to 3 feet.
.SUNDAY...South winds 15 to 20 knots becoming southwest 5 to
15 knots. Showers with a chance of thunderstorms. Waves 1 to
3 feet.
.MONDAY...Southwest winds 5 to 15 knots becoming west. A chance
of showers. Waves 1 to 3 feet building to 2 to 4 feet.

Winds and waves higher in and near thunderstorms.

$$