Nantucket — MA, United States

Tide times & tide chart

0.6 ft12:51am2.6 ft7:22am1.0 ft12:51pm3.2 ft7:27pmNow
Tide predictions for Nantucket, computed from harmonic constituents. High 3.2 feet on Mon 19 Oct 2026 at 19:30, low 0.6 feet on Mon 19 Oct 2026 at 00:50, above MLLW, the chart datum.
↑6:56am↓5:53pm

Predictions are not observations — conditions vary with weather and river flow. Not for navigation.

Slackwater predicts tides and currents offline, on your phone — tides worldwide, currents across the US and Canada.

Download on the App StoreSlackwater

Requires iOS 26 or later.

Tide times for the next 7 days

Mon 19 Oct 2026 through Sun 25 Oct 2026. All times are local to Nantucket (America/New_York). Heights are in feet above MLLW.
DayTideTimeHeight
Mon 19 Oct 2026Low0.6 ft
Mon 19 Oct 2026High2.6 ft
Mon 19 Oct 2026Low1.0 ft
Mon 19 Oct 2026High3.2 ft
Tue 20 Oct 2026Low0.6 ft
Tue 20 Oct 2026High2.7 ft
Tue 20 Oct 2026Low1.0 ft
Tue 20 Oct 2026High3.2 ft
Wed 21 Oct 2026Low0.6 ft
Wed 21 Oct 2026High2.8 ft
Wed 21 Oct 2026Low0.8 ft
Wed 21 Oct 2026High3.2 ft
Thu 22 Oct 2026Low0.6 ft
Thu 22 Oct 2026High3.0 ft
Thu 22 Oct 2026Low0.6 ft
Thu 22 Oct 2026High3.1 ft
Fri 23 Oct 2026Low0.6 ft
Fri 23 Oct 2026High3.3 ft
Fri 23 Oct 2026Low0.4 ft
Fri 23 Oct 2026High3.1 ft
Sat 24 Oct 2026Low0.5 ft
Sat 24 Oct 2026High3.5 ft
Sat 24 Oct 2026Low0.1 ft
Sat 24 Oct 2026High3.1 ft
Sun 25 Oct 2026Low0.4 ft
Sun 25 Oct 2026High3.7 ft
Sun 25 Oct 2026Low-0.1 ft

Station facts

Position
41.2850° N, 70.0967° W
Time zone
America/New_York
Datum
MLLW datum · computed from harmonic constituents
Source
Harmonic constituents from US National Oceanic and Atmospheric Administration
Region
MA, United States

Heights are measured above chart datum. A negative height means there is that much less water than the charted depth shows.

Slackwater database (https://github.com/openwatersio/slackwater-database)

How we check predictions — dated samples and their limits.

Nearby

All tide stations