Tides Today & Tomorrow in Port Jefferson, NY

TIDE TIMES for Monday, June 29, 2026
The tide is currently falling in Port Jefferson, NY.
Next low tide : in 2h 29m at 5:57 pm (1.0 ft)
Next high tide (tomorrow) : 12:04 am (7.0 ft)
Sunset today : 8:28 pm
Sunrise tomorrow : 5:23 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8514560
Common Questions About Tides

Port Jefferson, NY Tides - Jun 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu3:356.54:116.310:010.710:191.35:228:17Waxing Crescent1Thu
2Fri4:246.35:006.210:490.911:131.35:228:18First Quarter2Fri
3Sat5:166.05:516.211:381.15:218:19First Quarter3Sat
4Sun6:115.86:436.312:081.412:281.25:218:19First Quarter4Sun
5Mon7:075.77:346.41:041.31:181.25:208:20First Quarter5Mon
6Tue8:025.78:226.61:581.12:071.25:208:21Waxing Gibbous6Tue
7Wed8:545.89:086.82:480.92:541.25:208:21Waxing Gibbous7Wed
8Thu9:435.99:537.03:370.63:411.25:208:22Waxing Gibbous8Thu
9Fri10:296.010:367.24:240.44:271.15:208:23Waxing Gibbous9Fri
10Sat11:146.211:207.35:090.25:121.05:198:23Full Moon10Sat
11Sun11:586.35:530.05:570.85:198:24Full Moon11Sun
12Mon12:047.412:436.56:38-0.16:430.75:198:24Full Moon12Mon
13Tue12:517.51:296.67:23-0.17:320.65:198:25Waning Gibbous13Tue
14Wed1:397.52:186.78:11-0.18:230.65:198:25Waning Gibbous14Wed
15Thu2:317.43:096.89:01-0.19:180.65:198:25Waning Gibbous15Thu
16Fri3:257.34:026.99:520.010:160.55:198:26Waning Gibbous16Fri
17Sat4:207.14:567.110:450.111:170.55:198:26Third Quarter17Sat
18Sun5:186.85:537.211:400.25:198:27Third Quarter18Sun
19Mon6:196.66:517.412:200.412:360.35:208:27Third Quarter19Mon
20Tue7:226.47:497.51:230.31:330.45:208:27Waning Crescent20Tue
21Wed8:236.38:457.62:230.22:290.55:208:27Waning Crescent21Wed
22Thu9:226.49:397.63:210.03:240.65:208:27Waning Crescent22Thu
23Fri10:176.410:317.64:16-0.14:180.65:208:28Waning Crescent23Fri
24Sat11:086.511:207.55:07-0.15:090.65:218:28New Moon24Sat
25Sun11:556.65:54-0.15:570.65:218:28New Moon25Sun
26Mon12:067.412:416.66:380.06:430.75:218:28New Moon26Mon
27Tue12:517.21:256.67:210.27:280.85:228:28Waxing Crescent27Tue
28Wed1:367.02:096.58:020.38:130.95:228:28Waxing Crescent28Wed
29Thu2:206.82:536.58:440.58:591.05:238:28Waxing Crescent29Thu
30Fri3:056.63:376.59:260.69:461.15:238:28Waxing Crescent30Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8514560)

Common Questions About Port Jefferson, NY Tides

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What time does the tide turn (slack tide) in Port Jefferson, NY today?

Slack tide in Port Jefferson, NY is approximately 9:00 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 Port Jefferson, NY?

Port Jefferson, NY is currently in a spring phase. Tonight's moon is 100% 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 maximum.

What datum are Port Jefferson, 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 Port Jefferson, NY?

Tide predictions for Port Jefferson, 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 Port Jefferson, NY?

Tide data for Port Jefferson, NY is sourced from NOAA Station #8514560. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8514560.

What is the moon phase in Port Jefferson, NY tonight?

Tonight the moon over Port Jefferson, NY is Full Moon (100% illuminated). This places Port Jefferson, NY in a spring tide cycle, so tidal ranges are near their weekly maximum 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