Tides Today & Tomorrow in Sag Harbor, NY

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in Sag Harbor, NY.
Next low tide : in 6h 10m at 11:45 pm (0.5 ft)
Next high tide (tomorrow) : 6:03 am (2.0 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 5:35 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8511629
Common Questions About Tides

Sag Harbor, NY Tides - Sep 1977

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu1:242.71:443.07:300.38:060.46:157:22Waning Gibbous1Thu
2Fri2:072.52:272.98:150.58:560.56:167:20Waning Gibbous2Fri
3Sat2:512.43:132.89:030.69:480.66:177:19Third Quarter3Sat
4Sun3:412.24:042.79:530.710:420.76:187:17Third Quarter4Sun
5Mon4:392.15:022.610:460.811:360.76:197:15Third Quarter5Mon
6Tue5:472.16:042.611:400.86:207:14Third Quarter6Tue
7Wed6:532.27:022.712:300.712:350.86:217:12Third Quarter7Wed
8Thu7:442.37:522.71:210.61:280.76:227:10Waning Crescent8Thu
9Fri8:252.48:362.82:090.52:190.66:237:09Waning Crescent9Fri
10Sat9:022.69:172.92:540.53:080.56:247:07Waning Crescent10Sat
11Sun9:392.89:572.93:360.43:540.36:257:05New Moon11Sun
12Mon10:162.910:372.94:170.34:400.26:267:03New Moon12Mon
13Tue10:553.111:182.94:570.25:250.16:277:02New Moon13Tue
14Wed11:373.25:380.26:110.16:287:00New Moon14Wed
15Thu12:012.812:203.36:190.26:590.16:296:58Waxing Crescent15Thu
16Fri12:462.71:073.37:040.37:490.26:306:57Waxing Crescent16Fri
17Sat1:342.71:573.37:520.38:430.36:316:55Waxing Crescent17Sat
18Sun2:262.62:523.28:460.49:400.36:326:53First Quarter18Sun
19Mon3:252.53:533.19:460.510:400.46:336:52First Quarter19Mon
20Tue4:322.55:033.010:490.511:400.46:346:50First Quarter20Tue
21Wed5:482.56:173.011:540.56:356:48First Quarter21Wed
22Thu7:022.67:283.012:400.412:570.46:366:46Waxing Gibbous22Thu
23Fri8:042.88:283.01:360.31:580.36:376:45Waxing Gibbous23Fri
24Sat8:583.09:223.02:290.22:540.26:386:43Waxing Gibbous24Sat
25Sun9:463.110:113.03:190.23:470.16:396:41Full Moon25Sun
26Mon10:303.110:562.94:050.24:350.16:406:40Full Moon26Mon
27Tue11:113.211:392.84:500.25:210.16:416:38Full Moon27Tue
28Wed11:503.15:320.36:060.26:426:36Full Moon28Wed
29Thu12:192.712:273.16:150.46:510.26:436:35Waning Gibbous29Thu
30Fri12:582.61:053.06:570.57:360.46:446:33Waning Gibbous30Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8511629)

Common Questions About Sag Harbor, NY Tides

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What time does the tide turn (slack tide) in Sag Harbor, NY today?

Slack tide in Sag Harbor, NY is approximately 2:54 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 Sag Harbor, NY?

Sag Harbor, NY is currently in a neap phase. Tonight's moon is 52% 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 near their weekly minimum.

What datum are Sag Harbor, 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 Sag Harbor, NY?

Tide predictions for Sag Harbor, 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 Sag Harbor, NY?

Tide data for Sag Harbor, NY is sourced from NOAA Station #8511629. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8511629.

What is the moon phase in Sag Harbor, NY tonight?

Tonight the moon over Sag Harbor, NY is First Quarter (52% illuminated). This places Sag Harbor, NY in a neap tide cycle, so tidal ranges are near their weekly minimum 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