Tides Today & Tomorrow in Nantucket, MA

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently falling in Nantucket, MA.
Next low tide (tomorrow) : in 58m at 12:27 am (0.5 ft)
Next high tide (tomorrow) : 6:58 am (2.7 ft)
Sunset today : 7:33 pm
Sunrise tomorrow : 5:53 am
Moon phase : First Quarter (46% illuminated)
Tide Station Location : Station #8449130
Common Questions About Tides

Nantucket, MA Tides - Nov 1941

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:133.510:423.13:290.44:040.36:114:36Waxing Gibbous1Sat
2Sun10:533.511:263.04:110.54:480.26:124:35Full Moon2Sun
3Mon11:313.54:500.55:290.26:134:34Full Moon3Mon
4Tue12:072.912:083.55:290.66:080.26:154:32Full Moon4Tue
5Wed12:452.912:443.56:070.66:480.16:164:31Full Moon5Wed
6Thu1:232.91:213.56:460.77:270.26:174:30Waning Gibbous6Thu
7Fri2:012.81:593.57:260.88:090.26:184:29Waning Gibbous7Fri
8Sat2:432.82:403.48:070.88:520.26:194:28Waning Gibbous8Sat
9Sun3:272.73:253.48:520.99:380.36:214:27Waning Gibbous9Sun
10Mon4:152.74:133.39:400.910:240.36:224:26Third Quarter10Mon
11Tue5:032.85:043.310:310.811:120.36:234:25Third Quarter11Tue
12Wed5:522.95:573.211:240.76:244:24Third Quarter12Wed
13Thu6:413.06:533.212:000.312:200.66:264:23Third Quarter13Thu
14Fri7:323.37:513.212:500.21:190.46:274:22Waning Crescent14Fri
15Sat8:223.58:483.31:420.12:180.16:284:21Waning Crescent15Sat
16Sun9:123.89:443.32:340.03:14-0.16:294:20Waning Crescent16Sun
17Mon10:024.010:403.33:25-0.14:07-0.46:304:19New Moon17Mon
18Tue10:554.211:383.44:16-0.25:01-0.66:324:19New Moon18Tue
19Wed11:494.45:07-0.25:54-0.76:334:18New Moon19Wed
20Thu12:343.412:434.45:59-0.26:48-0.76:344:17Waxing Crescent20Thu
21Fri1:303.41:374.46:53-0.17:42-0.76:354:17Waxing Crescent21Fri
22Sat2:253.32:334.27:480.08:37-0.56:364:16Waxing Crescent22Sat
23Sun3:233.33:314.08:460.19:34-0.46:374:15Waxing Crescent23Sun
24Mon4:233.34:323.89:470.210:32-0.26:384:15First Quarter24Mon
25Tue5:223.35:323.510:500.311:280.06:404:14First Quarter25Tue
26Wed6:203.36:343.311:530.46:414:14First Quarter26Wed
27Thu7:173.37:353.112:230.212:570.46:424:13Waxing Gibbous27Thu
28Fri8:103.48:343.01:180.32:000.46:434:13Waxing Gibbous28Fri
29Sat8:583.49:272.92:100.42:570.36:444:12Waxing Gibbous29Sat
30Sun9:413.510:142.82:570.53:450.36:454:12Waxing Gibbous30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8449130)

Common Questions About Nantucket, MA Tides

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

Slack tide in Nantucket, MA is approximately 3:42 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 Nantucket, MA?

Nantucket, MA is currently in a neap phase. Tonight's moon is 46% 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 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 First Quarter (46% illuminated). This places Nantucket, MA 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