Tides Today & Tomorrow in Nantucket, MA

TIDE TIMES for Wednesday, July 22, 2026
The tide is currently rising in Nantucket, MA.
Next low tide : 12:59 pm (0.7 ft)
Next high tide : in 6h 24m at 7:34 am (2.8 ft)
Sunset today : 8:07 pm
Sunrise tomorrow : 5:26 am
Moon phase : First Quarter (62% illuminated)
Tide Station Location : Station #8449130
Common Questions About Tides

Nantucket, MA Tides - May 1989

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:553.39:313.32:210.12:52-0.15:377:37Waning Crescent1Mon
2Tue9:573.210:233.63:24-0.13:45-0.15:367:38Waning Crescent2Tue
3Wed10:563.211:143.94:24-0.44:36-0.15:347:39Waning Crescent3Wed
4Thu11:563.15:21-0.65:27-0.15:337:40New Moon4Thu
5Fri12:074.112:553.16:16-0.76:18-0.15:327:41New Moon5Fri
6Sat1:014.11:523.07:10-0.87:090.05:317:42New Moon6Sat
7Sun1:544.22:453.08:03-0.78:010.15:297:43Waxing Crescent7Sun
8Mon2:474.13:382.98:56-0.68:540.25:287:44Waxing Crescent8Mon
9Tue3:403.94:332.89:51-0.49:500.35:277:45Waxing Crescent9Tue
10Wed4:363.75:292.710:47-0.210:480.55:267:46First Quarter10Wed
11Thu5:333.56:242.711:420.011:480.55:257:47First Quarter11Thu
12Fri6:303.37:172.812:340.25:247:48First Quarter12Fri
13Sat7:273.08:092.812:480.61:250.35:237:49First Quarter13Sat
14Sun8:242.98:572.91:500.62:150.55:227:50Waxing Gibbous14Sun
15Mon9:202.79:413.02:530.53:030.65:217:51Waxing Gibbous15Mon
16Tue10:122.610:213.23:490.43:470.65:207:52Waxing Gibbous16Tue
17Wed11:002.611:013.24:370.34:280.75:197:53Waxing Gibbous17Wed
18Thu11:472.511:403.35:190.25:070.75:187:54Waxing Gibbous18Thu
19Fri12:322.55:590.25:450.75:177:55Full Moon19Fri
20Sat12:203.41:142.56:380.16:230.75:167:56Full Moon20Sat
21Sun1:003.41:552.57:160.07:010.75:167:57Full Moon21Sun
22Mon1:413.52:352.57:560.07:410.75:157:58Full Moon22Mon
23Tue2:213.53:162.58:370.08:240.75:147:59Waning Gibbous23Tue
24Wed3:043.64:002.59:210.09:110.65:138:00Waning Gibbous24Wed
25Thu3:503.64:472.610:08-0.110:030.65:138:01Waning Gibbous25Thu
26Fri4:403.55:372.810:56-0.111:010.55:128:02Third Quarter26Fri
27Sat5:353.56:273.011:45-0.15:118:03Third Quarter27Sat
28Sun6:333.37:193.212:010.412:35-0.15:118:03Third Quarter28Sun
29Mon7:333.28:123.51:020.21:270.05:108:04Third Quarter29Mon
30Tue8:373.19:063.72:060.12:210.05:108:05Waning Crescent30Tue
31Wed9:403.010:003.93:10-0.13:160.15:098:06Waning Crescent31Wed
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 10:16 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 transitional phase. Tonight's moon is 62% 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 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 (62% illuminated). This places Nantucket, MA 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