Tides Today & Tomorrow in Mount Sinai, NY

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in Mount Sinai, NY.
Next low tide : in 4h 04m at 10:22 am (0.8 ft)
Next high tide : 4:21 pm (6.4 ft)
Sunset today : 7:46 pm
Sunrise tomorrow : 6:05 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8514421
Common Questions About Tides

Mount Sinai, NY Tides - Oct 2036

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:246.09:426.23:270.73:480.86:496:33Waxing Gibbous1Wed
2Thu10:076.310:256.34:110.64:330.66:506:31Waxing Gibbous2Thu
3Fri10:466.511:056.44:520.55:140.46:516:30Full Moon3Fri
4Sat11:236.611:436.55:300.45:540.26:526:28Full Moon4Sat
5Sun11:596.76:070.36:320.16:536:26Full Moon5Sun
6Mon12:216.512:346.86:430.37:110.16:546:25Full Moon6Mon
7Tue12:596.41:116.87:200.37:500.16:556:23Waning Gibbous7Tue
8Wed1:396.41:516.87:590.48:330.26:566:22Waning Gibbous8Wed
9Thu2:226.32:346.88:410.59:190.26:576:20Waning Gibbous9Thu
10Fri3:106.13:236.79:280.610:110.46:596:18Waning Gibbous10Fri
11Sat4:026.04:176.610:230.811:090.57:006:17Third Quarter11Sat
12Sun5:005.95:196.411:250.87:016:15Third Quarter12Sun
13Mon6:025.96:256.412:120.512:310.87:026:14Third Quarter13Mon
14Tue7:076.17:326.51:160.41:380.67:036:12Waning Crescent14Tue
15Wed8:116.48:356.72:180.22:420.37:046:11Waning Crescent15Wed
16Thu9:096.89:346.83:160.03:420.07:056:09Waning Crescent16Thu
17Fri10:037.110:287.04:10-0.24:37-0.37:066:08Waning Crescent17Fri
18Sat10:537.411:187.05:00-0.35:29-0.57:076:06New Moon18Sat
19Sun11:407.55:48-0.46:19-0.67:086:05New Moon19Sun
20Mon12:076.912:267.56:34-0.37:07-0.57:106:03New Moon20Mon
21Tue12:556.81:137.37:20-0.17:54-0.37:116:02Waxing Crescent21Tue
22Wed1:426.51:597.08:060.28:41-0.17:126:00Waxing Crescent22Wed
23Thu2:316.22:476.78:530.59:300.27:135:59Waxing Crescent23Thu
24Fri3:216.03:366.49:430.810:200.57:145:57Waxing Crescent24Fri
25Sat4:135.84:296.110:361.111:130.77:155:56First Quarter25Sat
26Sun5:075.65:245.811:321.27:165:55First Quarter26Sun
27Mon6:035.56:235.712:080.912:301.37:185:53First Quarter27Mon
28Tue7:005.67:205.71:020.91:281.27:195:52First Quarter28Tue
29Wed7:545.78:155.71:550.92:221.07:205:51Waxing Gibbous29Wed
30Thu8:446.09:055.92:440.83:120.87:215:50Waxing Gibbous30Thu
31Fri9:286.29:506.03:300.63:590.57:225:48Waxing Gibbous31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8514421)

Common Questions About Mount Sinai, NY Tides

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What time does the tide turn (slack tide) in Mount Sinai, NY today?

Slack tide in Mount Sinai, NY is approximately 1:21 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 Mount Sinai, NY?

Mount Sinai, NY is currently in a transitional phase. Tonight's moon is 36% 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 Mount Sinai, 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 Mount Sinai, NY?

Tide predictions for Mount Sinai, 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 Mount Sinai, NY?

Tide data for Mount Sinai, NY is sourced from NOAA Station #8514421. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8514421.

What is the moon phase in Mount Sinai, NY tonight?

Tonight the moon over Mount Sinai, NY is First Quarter (36% illuminated). This places Mount Sinai, 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