Tides Today & Tomorrow in Bay Shore, NY

TIDE TIMES for Friday, August 21, 2026
The tide is currently falling in Bay Shore, NY.
Next low tide : in 5h 06m at 11:30 am (0.5 ft)
Next high tide : 5:36 pm (1.0 ft)
Sunset today : 7:42 pm
Sunrise tomorrow : 6:09 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8515102
Common Questions About Tides

Bay Shore, NY Tides - May 1932

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:521.08:221.12:070.32:190.25:517:48Waning Crescent1Sun
2Mon8:401.09:031.12:520.22:570.15:507:49Waning Crescent2Mon
3Tue9:221.09:401.13:340.23:350.15:487:50Waning Crescent3Tue
4Wed10:021.010:151.24:170.14:120.15:477:51New Moon4Wed
5Thu10:401.010:471.24:580.14:500.25:467:52New Moon5Thu
6Fri11:171.011:191.25:390.15:280.25:457:53New Moon6Fri
7Sat11:550.911:501.16:170.16:040.25:437:54New Moon7Sat
8Sun12:330.96:550.16:390.35:427:55Waxing Crescent8Sun
9Mon12:221.11:150.97:310.27:130.35:417:56Waxing Crescent9Mon
10Tue1:001.12:030.98:100.27:510.45:407:57Waxing Crescent10Tue
11Wed1:481.12:560.98:540.38:370.45:397:58Waxing Crescent11Wed
12Thu2:461.13:500.99:480.39:410.45:387:59First Quarter12Thu
13Fri3:461.14:440.910:510.311:000.45:378:00First Quarter13Fri
14Sat4:461.15:401.011:520.25:368:01First Quarter14Sat
15Sun5:471.16:391.112:140.312:480.15:358:02Waxing Gibbous15Sun
16Mon6:531.17:381.21:190.21:410.05:348:03Waxing Gibbous16Mon
17Tue7:571.18:341.32:180.02:31-0.15:338:04Waxing Gibbous17Tue
18Wed8:561.19:251.43:14-0.13:22-0.15:328:05Full Moon18Wed
19Thu9:501.110:151.44:09-0.24:14-0.15:318:06Full Moon19Thu
20Fri10:431.111:061.45:04-0.25:07-0.15:318:07Full Moon20Fri
21Sat11:361.111:571.45:57-0.26:00-0.15:308:08Full Moon21Sat
22Sun12:321.16:48-0.26:510.05:298:09Waning Gibbous22Sun
23Mon12:511.31:301.07:38-0.17:420.15:288:10Waning Gibbous23Mon
24Tue1:481.22:301.08:280.08:350.35:288:11Waning Gibbous24Tue
25Wed2:451.13:281.09:210.19:340.45:278:12Third Quarter25Wed
26Thu3:411.14:211.010:180.210:400.55:268:12Third Quarter26Thu
27Fri4:321.05:121.011:140.211:440.55:268:13Third Quarter27Fri
28Sat5:221.06:011.012:060.35:258:14Third Quarter28Sat
29Sun6:140.96:511.012:430.412:520.35:258:15Waning Crescent29Sun
30Mon7:070.97:401.11:340.41:350.25:248:16Waning Crescent30Mon
31Tue8:000.98:251.12:200.32:150.25:248:16Waning Crescent31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8515102)

Common Questions About Bay Shore, NY Tides

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

Slack tide in Bay Shore, NY is approximately 2:33 pm — 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 65% 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 First Quarter (65% 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