Tides Today & Tomorrow in Bay Shore, NY

TIDE TIMES for Monday, August 17, 2026
The tide is currently falling in Bay Shore, NY.
Next low tide : in 3h 42m at 8:12 am (0.1 ft)
Next high tide : 2:24 pm (1.2 ft)
Sunset today : 7:48 pm
Sunrise tomorrow : 6:05 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8515102
Common Questions About Tides

Bay Shore, NY Tides - Apr 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:091.16:22-0.26:25-0.15:366:17Waxing Crescent1Sat
2Sun12:281.22:031.08:09-0.18:090.06:347:18Waxing Crescent2Sun
3Mon2:211.13:000.99:010.18:570.26:327:19First Quarter3Mon
4Tue3:151.03:560.910:000.29:560.36:317:20First Quarter4Tue
5Wed4:111.04:520.811:070.311:050.46:297:21First Quarter5Wed
6Thu5:060.95:490.812:120.36:287:22First Quarter6Thu
7Fri6:050.96:480.812:140.41:080.36:267:23Waxing Gibbous7Fri
8Sat7:050.97:450.91:130.41:550.26:247:24Waxing Gibbous8Sat
9Sun8:010.98:331.02:040.32:370.26:237:25Waxing Gibbous9Sun
10Mon8:481.09:151.02:500.23:150.16:217:26Waxing Gibbous10Mon
11Tue9:281.09:521.13:330.13:530.16:207:27Waxing Gibbous11Tue
12Wed10:051.010:261.14:150.14:300.16:187:28Full Moon12Wed
13Thu10:401.010:581.14:570.05:060.16:167:30Full Moon13Thu
14Fri11:141.011:291.25:370.05:400.16:157:31Full Moon14Fri
15Sat11:481.06:160.06:140.16:137:32Waning Gibbous15Sat
16Sun12:001.112:240.96:540.06:460.26:127:33Waning Gibbous16Sun
17Mon12:361.11:060.97:330.17:200.26:107:34Waning Gibbous17Mon
18Tue1:191.11:570.98:150.18:000.36:097:35Waning Gibbous18Tue
19Wed2:141.12:580.99:070.28:530.36:077:36Third Quarter19Wed
20Thu3:171.14:020.910:130.210:100.46:067:37Third Quarter20Thu
21Fri4:221.15:050.911:240.211:370.36:047:38Third Quarter21Fri
22Sat5:271.16:091.012:290.16:037:39Third Quarter22Sat
23Sun6:341.17:141.112:500.21:260.06:027:40Waning Crescent23Sun
24Mon7:391.18:141.21:530.12:18-0.16:007:41Waning Crescent24Mon
25Tue8:381.29:071.32:50-0.13:07-0.25:597:42Waning Crescent25Tue
26Wed9:301.29:551.33:44-0.13:55-0.25:577:43New Moon26Wed
27Thu10:201.210:411.44:37-0.24:43-0.25:567:44New Moon27Thu
28Fri11:081.111:261.35:28-0.25:30-0.25:557:45New Moon28Fri
29Sat11:571.16:16-0.26:16-0.15:537:46Waxing Crescent29Sat
30Sun12:121.312:481.07:03-0.17:000.15:527:47Waxing Crescent30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8515102)

Common Questions About Bay Shore, NY Tides

Show All
What time does the tide turn (slack tide) in Bay Shore, NY today?

Slack tide in Bay Shore, NY is approximately 11:18 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Bay Shore, NY?

Bay Shore, NY is currently in a transitional phase. Tonight's moon is 27% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are shifting between spring and neap.

What datum are Bay Shore, NY tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Bay Shore, NY?

Tide predictions for Bay Shore, NY come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Bay Shore, NY?

Tide data for Bay Shore, NY is sourced from NOAA Station #8515102. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8515102.

What is the moon phase in Bay Shore, NY tonight?

Tonight the moon over Bay Shore, NY is Waxing Crescent (27% illuminated). This places Bay Shore, NY in a transitional tide cycle, so tidal ranges are shifting between spring and neap this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA