Tides Today & Tomorrow in Nantucket, MA

TIDE TIMES for Saturday, July 4, 2026
The tide is currently falling in Nantucket, MA.
Next low tide : in 1h 46m at 9:42 am (0.2 ft)
Next high tide : 4:20 pm (2.9 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 5:12 am
Moon phase : Waning Gibbous (81% illuminated)
Tide Station Location : Station #8449130
Common Questions About Tides

Nantucket, MA Tides - Oct 2008

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:133.22:123.77:340.68:140.16:376:21Waxing Crescent1Wed
2Thu2:543.02:503.68:150.78:590.26:386:20Waxing Crescent2Thu
3Fri3:362.93:303.68:570.89:450.36:396:18Waxing Crescent3Fri
4Sat4:192.84:143.59:420.910:340.46:406:16Waxing Crescent4Sat
5Sun5:062.75:023.410:301.011:250.56:416:15First Quarter5Sun
6Mon5:562.65:543.311:211.06:426:13First Quarter6Mon
7Tue6:472.66:473.312:160.612:121.16:446:12First Quarter7Tue
8Wed7:402.67:413.31:060.61:051.16:456:10First Quarter8Wed
9Thu8:312.78:353.31:570.62:001.06:466:08Waxing Gibbous9Thu
10Fri9:192.89:273.32:460.62:560.96:476:07Waxing Gibbous10Fri
11Sat10:033.010:163.33:310.63:480.66:486:05Waxing Gibbous11Sat
12Sun10:443.311:053.34:130.54:360.46:496:03Waxing Gibbous12Sun
13Mon11:253.511:553.34:530.45:240.16:506:02Full Moon13Mon
14Tue12:083.85:340.36:12-0.16:516:00Full Moon14Tue
15Wed12:453.212:544.06:160.37:00-0.36:525:59Full Moon15Wed
16Thu1:363.21:414.27:010.37:51-0.46:535:57Waning Gibbous16Thu
17Fri2:263.12:314.27:490.28:43-0.46:545:56Waning Gibbous17Fri
18Sat3:183.13:244.28:400.39:38-0.36:565:54Waning Gibbous18Sat
19Sun4:153.04:234.29:360.310:36-0.26:575:53Waning Gibbous19Sun
20Mon5:163.05:254.010:360.411:36-0.16:585:51Third Quarter20Mon
21Tue6:183.06:303.911:390.56:595:50Third Quarter21Tue
22Wed7:213.07:353.712:360.012:450.57:005:48Third Quarter22Wed
23Thu8:243.28:403.61:360.11:520.57:015:47Waning Crescent23Thu
24Fri9:223.39:433.42:350.23:000.47:025:45Waning Crescent24Fri
25Sat10:143.510:413.33:290.34:020.37:045:44Waning Crescent25Sat
26Sun11:013.611:353.24:180.44:560.27:055:43Waning Crescent26Sun
27Mon11:443.65:010.55:440.17:065:41New Moon27Mon
28Tue12:263.012:243.75:430.66:290.17:075:40New Moon28Tue
29Wed1:122.91:033.76:230.67:110.17:085:39New Moon29Wed
30Thu1:532.81:403.67:030.77:520.17:105:37New Moon30Thu
31Fri2:312.82:183.67:430.88:330.27:115:36Waxing Crescent31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8449130)

Common Questions About Nantucket, MA Tides

Show All
What time does the tide turn (slack tide) in Nantucket, MA today?

Slack tide in Nantucket, MA is approximately 1:01 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 Nantucket, MA?

Nantucket, MA is currently in a spring phase. Tonight's moon is 81% 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 Nantucket, MA 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 Nantucket, MA?

Tide predictions for Nantucket, MA 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 Nantucket, MA?

Tide data for Nantucket, MA is sourced from NOAA Station #8449130. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8449130.

What is the moon phase in Nantucket, MA tonight?

Tonight the moon over Nantucket, MA is Waning Gibbous (81% illuminated). This places Nantucket, MA 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