Lake Temperatures

Lake Erie

The reported Lake Erie water temperature is taken at the Buffalo Water Treatment Plant located on Lake Erie at the entrance to the Niagara River. The reading is taken at a depth of 30 feet. This data is unofficial.

Lake Ontario

The reported Lake Ontario water temperature is taken at the Monroe County Water Treatment Plant near Greece, N.Y. The temperatures is measured at the intake pipes about 1500 feet offshore at a approximate depth of 35 feet. The Lake Ontario temperature occasionally may not be representative of the surface temperature due to upwelling. This process, more common during the summer months, brings colder water from the deeper parts of the lake toward the surface near the temperature sensor. The surface water may be significantly warmer. This data is unofficial.

Latest Lake Temperatures

1003 AM EDT Sun May 10 2026 The water temperature off Buffalo is 48 degrees.

1003 AM EDT Sun May 10 2026 The water temperature off Rochester is 47 degrees.

Monthly Lake Erie Temperatures
January	February	March	April	May	June	July	August	September	October	November	December

Historical Lake Erie Temperatures (Unofficial Normals and Extremes)

The daily lake temperatures for Lake Erie off Buffalo and for Lake Ontario off Rochester are included in the Nearshore Marine Forecast.

Click the link for previous versions of the Nearshore Marine Forecast.

NearShore Marine Forecast

813
FZUS51 KBUF 110204
NSHBUF

Nearshore Marine Forecast
National Weather Service Buffalo NY
1003 PM EDT Sun May 10 2026

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-LOZ030-110900-
Upper Niagara River and Buffalo Harbor-Lower Niagara River-
1003 PM EDT Sun May 10 2026

.REST OF TONIGHT...Southwest winds less than 10 knots. Mostly
cloudy.
.MONDAY...Light and variable winds becoming northwest 5 to
10 knots. Partly to mostly sunny.
.MONDAY NIGHT...Northwest winds less than 10 knots. Mainly clear.
.TUESDAY...Light and variable winds. Sunny.
.TUESDAY NIGHT...South winds 10 knots or less. Showers.
.WEDNESDAY...Southwest winds 5 to 15 knots becoming west.
Showers.
.THURSDAY...West winds 10 knots or less. A chance of showers
during the day.
.FRIDAY...Southwest winds 10 knots or less. A chance of showers
Friday night.

The water temperature off Buffalo is 48 degrees.

$$

LEZ040-041-110900-
Buffalo to Ripley along Lake Erie-
1003 PM EDT Sun May 10 2026

.REST OF TONIGHT...Southwest winds 10 knots or less becoming
west. Partly cloudy. Waves 1 foot or less.
.MONDAY...North winds 10 knots or less becoming west. Becoming
mostly sunny. Waves 1 foot or less.
.MONDAY NIGHT...West winds 5 to 10 knots becoming light and
variable. Mainly clear. Waves 1 foot or less.
.TUESDAY...Light and variable winds. Sunny. Waves 1 foot or less.
.TUESDAY NIGHT...Southeast winds 10 knots or less becoming south
and increasing to 15 to 20 knots overnight. A chance of showers
in the evening, then showers overnight. Waves 2 feet or less.
.WEDNESDAY...Southwest winds 15 to 20 knots becoming west 5 to
15 knots. Showers. Waves 1 to 3 feet.
.THURSDAY...West winds 5 to 10 knots becoming light and variable.
A chance of showers during the day. Waves 2 feet or less.
.FRIDAY...Southwest winds 10 knots or less. A chance of showers
Friday night. Waves 1 foot or less.

$$

LOZ042-110900-
Niagara River to Hamlin Beach along Lake Ontario-
1003 PM EDT Sun May 10 2026

.REST OF TONIGHT...West winds 10 knots or less becoming
northwest. Partly cloudy late this evening, then becoming mostly
cloudy. Waves 1 foot or less.
.MONDAY...Northwest winds 10 knots or less becoming west.
Becoming mostly sunny. Waves 1 foot or less.
.MONDAY NIGHT...West winds 10 knots or less becoming northwest.
Clear. Waves 1 foot or less.
.TUESDAY...West winds less than 10 knots becoming northeast.
Sunny. Waves 1 foot or less.
.TUESDAY NIGHT...East winds 5 to 15 knots becoming southeast.
Showers. Waves 2 feet or less.
.WEDNESDAY...South winds 15 to 20 knots becoming west 5 to
15 knots. Showers. Waves 2 feet or less.
.THURSDAY...West winds 5 to 10 knots. A chance of showers during
the day. Waves 1 to 2 feet.
.FRIDAY...West winds 5 to 10 knots becoming southwest. A chance
of showers Friday night. Waves 1 foot or less.

$$

LOZ043-110900-
Hamlin Beach to Sodus Bay along Lake Ontario
including Irondequoit Bay-
1003 PM EDT Sun May 10 2026

.REST OF TONIGHT...West winds 10 knots or less. Clear late this
evening, then becoming partly cloudy. Waves 1 foot or less.
.MONDAY...West winds 10 knots or less. Mostly sunny. Waves 1 foot
or less.
.MONDAY NIGHT...West winds 5 to 10 knots. Clear. Waves 1 to
2 feet.
.TUESDAY...West winds less than 10 knots becoming northeast.
Sunny. Waves 1 foot or less.
.TUESDAY NIGHT...East winds 10 knots or less becoming southeast
10 to 15 knots. Showers overnight. Waves 2 feet or less.
.WEDNESDAY...South winds 15 to 20 knots becoming west 5 to
15 knots. Showers. Waves 2 feet or less.
.THURSDAY...West winds 5 to 10 knots. A chance of showers during
the day. Waves 2 feet or less.
.FRIDAY...West winds 5 to 10 knots becoming southwest. Mostly
cloudy. Waves 1 foot or less.

The water temperature off Rochester is 47 degrees.

$$

LOZ044-110900-
Sodus Bay to Mexico Bay along Lake Ontario-
1003 PM EDT Sun May 10 2026

.REST OF TONIGHT...West winds 10 knots or less. Mainly clear.
Waves 1 to 2 feet.
.MONDAY...West winds 10 knots or less. Mostly sunny. Waves 2 feet
or less.
.MONDAY NIGHT...West winds 5 to 10 knots. Mainly clear. Waves
1 to 2 feet.
.TUESDAY...West winds less than 10 knots becoming northwest.
Sunny. Waves 1 foot or less.
.TUESDAY NIGHT...Light and variable winds becoming southeast
15 to 20 knots. Showers overnight. Waves 2 feet or less.
.WEDNESDAY...South winds 15 to 20 knots becoming southwest and
diminishing to 5 to 10 knots. Showers with a chance of
thunderstorms. Waves 1 to 3 feet subsiding to 1 foot or less.
.THURSDAY...West winds 5 to 10 knots. A chance of showers during
the day. Waves 2 feet or less.
.FRIDAY...West winds 5 to 10 knots becoming southwest. Mostly
cloudy. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ045-110900-
Mexico Bay to the Saint Lawrence River along Lake Ontario-
1003 PM EDT Sun May 10 2026

.REST OF TONIGHT...West winds 5 to 10 knots becoming northwest.
Clear. Waves 1 to 3 feet subsiding to 1 foot or less.
.MONDAY...West winds 5 to 15 knots. Mostly sunny. Waves 2 feet or
less.
.MONDAY NIGHT...West winds 10 knots or less becoming north.
Mainly clear. Waves 2 feet or less.
.TUESDAY...Northeast winds 10 knots or less becoming southwest.
Sunny. Waves 1 foot or less.
.TUESDAY NIGHT...South winds 10 knots or less becoming southeast
and increasing to 15 to 20 knots overnight. Showers likely
overnight. Waves 2 feet or less.
.WEDNESDAY...Southeast winds 15 to 25 knots becoming southwest
and diminishing to 5 to 15 knots. Showers. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.THURSDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers. Waves 2 feet or less.
.FRIDAY...West winds 5 to 10 knots becoming southwest. Mostly
cloudy. Waves 1 foot or less.

$$