Lake Ontario - Hamlin Beach to Sodus Bay including Irondequoit Bay Marine Forecast
| Overnight...Northeast Winds 10 To 15 Knots Increasing To 15 To 25 Knots. Mostly Cloudy. Waves 1 To 3 Feet Building To 4 To 7 Feet. Waves Occasionally Around 9 Feet. |
| Monday...Northeast Winds 15 To 25 Knots. Mostly Cloudy. Waves 4 To 7 Feet Subsiding To 3 To 6 Feet. Waves Occasionally Around 9 Feet. |
| Monday Night...Northeast Winds 15 To 25 Knots Becoming East. Mostly Cloudy. Waves 3 To 5 Feet Building To 4 To 7 Feet. Waves Occasionally Around 9 Feet. |
| Tuesday...East Winds 15 To 20 Knots Becoming Northeast. Mostly Sunny. Waves 4 To 7 Feet Subsiding To 3 To 6 Feet. Waves Occasionally Around 9 Feet. |
| Tuesday Night...Northeast Winds 15 To 20 Knots Becoming East. Partly To Mostly Cloudy. Waves 3 To 6 Feet. Waves Occasionally Around 7 Feet. |
| Wednesday...East Winds 15 To 20 Knots. Mainly Clear, Then Becoming Partly Cloudy. Waves 3 To 5 Feet Subsiding To 2 To 4 Feet. Waves Occasionally Around 6 Feet. |
| Thursday...East Winds 5 To 15 Knots Becoming Northeast. Partly Cloudy. Waves 1 To 3 Feet. |
| Friday...Northeast Winds 5 To 15 Knots. Partly To Mostly Cloudy. Waves 1 To 3 Feet. The Water Temperature Off Rochester Is 50 Degrees, And The Water Temperature At The Central Lake Buoy Is 69 Degrees. |
| Area Forecast Discussion National Weather Service Buffalo NY 128am EDT Monday September 21 2026 .WHAT HAS CHANGED... Only minor changes with this forecast update. .KEY MESSAGES... 1) Below normal temperatures will continue through the upcoming week, with a few showers possible at times mid-week. KEY MESSAGE 1...Below normal temperatures will continue through the upcoming week, with a few showers possible at times mid-week. Over the next few days the bulk of broad upper level troughing over eastern Canada will slowly drift eastward and out to sea. As it does so...the far southwestern extent of this trough will eventually break off and merge with a pair of shortwaves making their way across the Ohio Valley...resulting in the formation of a modest closed low that will then slide southeastward across the Ohio Valley/mid-Atlantic states during the mid-late week period. Meanwhile at the surface...expansive cool Canadian high pressure will slowly drift from Ontario to Quebec Provinces and strengthen through Wednesday...then will remain in place through the end of the week while a surface low develops off the mid-Atlantic coastline in response to the approaching cutoff upper low and attendant DCVA/height falls aloft. As a result of all this...our region will remain under a prevailing northeasterly to easterly low level flow right through the week... resulting in an extended period of below normal temperatures. The coolest days will be today and Tuesday when highs will range from the upper 50s to the lower 60s in most areas...and nightly lows will generally range through the 40s. The exception to the latter will be across the North Country where skies should clear enough tonight/ remain clear enough Tuesday night to allow lows in the upper 30s... which may allow for some isolated frost in a few spots. Gradual day- to-day warming will then follow for the rest of the week as our airmass slowly modifies. With respect to precipitation chances...the approaching Ohio Valley shortwaves/developing closed upper low should encourage weak surface troughing to our south to temporarily edge back northward again between Monday night and Wednesday...when moisture/lift from these features may allowing for a few spotty light showers at times across the Southern Tier. Otherwise the strong surface high and largely confluent flow aloft should keep our region dry through the work week...before the aforementioned coastal system potentially throws a few showers back across our eastern zones Next Weekend with this potential dependent upon just how far west this feature ultimately gets. Marine Expansive surface high pressure over Ontario Province will build across Quebec and strengthen through midweek...while weak surface troughing slides eastward across the Ohio Valley and mid-Atlantic states. The resulting pressure gradient will maintain a moderate to fairly brisk flow across the Lower Great Lakes through midweek that will also gradually veer from northeasterly to easterly over time. This will allow for SCA-level conditions across the nearshore waters of both lakes today...with these then becoming more confined to areas from Sodus Bay westward tonight/Tuesday...and then from Hamlin Beach to the Niagara River Tuesday night/Wednesday as the flow veers more easterly. Any lingering SCA-level conditions should then subside Wednesday night as the surface ridge builds further southward and results in a weakening of the pressure gradient across our region...along with a commensurate lowering of winds and wave action. NOAA Buffalo NY Office: Watches - Warnings - Advisories NY...Beach Hazards Statement through Wednesday evening for NYZ001- 002. Beach Hazards Statement through Wednesday morning for NYZ003- 004. Beach Hazards Statement through this evening for NYZ005-006. Marine Small Craft Advisory until 11pm EDT Tuesday for LEZ040-041. Small Craft Advisory until 8pm EDT this evening for LOZ030-044-045. Small Craft Advisory until 8pm EDT Wednesday for LOZ042. Small Craft Advisory until 8am EDT Wednesday for LOZ043. |
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