Nantucket king tides 2026–27

The highest tides NOAA predicts for Nantucket over the next 12 months, one per spring tide, at Nantucket Island. The biggest is 4.4 ft on Thu, Nov 26, 2026 at 12:56 PM, about 1.2 ft above a typical high tide.

Next big tide: Thu, Oct 29, 2026 at 3:06 PM, 4.2 ft.

Highest tides

Nantucket highest predicted tides
DateTimeHeightAbove a typical highMoon
Thu, Oct 29, 20263:06 PM4.2 ft1.0 ft4 days after the full moon
Thu, Nov 26, 202612:56 PM4.4 ft1.2 ft2 days after the full moon
Fri, Dec 25, 202612:43 PM4.3 ft1.1 ft2 days after the full moon
Fri, Jan 22, 202711:34 AM4.2 ft1.0 fton the full moon
Mon, Jun 7, 20272:26 AM4.2 ft1.0 ft2 days after the new moon
Mon, Jul 5, 20271:16 AM4.3 ft1.1 ft1 day after the new moon
Mon, Aug 2, 202712:02 AM4.3 ft1.1 fton the new moon
Sun, Aug 29, 202710:49 PM4.2 ft1.0 ft2 days before the new moon
Sat, Sep 4, 20273:44 PM4.0 ft0.8 ft
Sat, Oct 2, 20272:26 PM4.1 ft0.9 ft3 days after the new moon

These are astronomical predictions. An onshore wind, heavy rain or a storm can push water a foot or more higher, and that is when king tides flood low roads, docks and marsh-front yards. Check the forecast the week before.

Lowest tides

The same spring tides drain the water lowest. Good days for shelling, walking sandbars and exploring the flats; mind the time and the incoming tide.

Nantucket lowest predicted tides
DateTimeHeightBelow a typical lowMoon
Wed, Nov 25, 20266:18 PM−0.6 ft0.8 ft1 day after the full moon
Fri, Dec 25, 20266:53 PM−0.6 ft0.9 ft2 days after the full moon
Sat, Jan 23, 20276:32 PM−0.6 ft0.9 ft1 day after the full moon
Sat, Feb 20, 20275:19 PM−0.5 ft0.7 fton the full moon
Sun, May 9, 20278:54 AM−0.5 ft0.7 ft3 days after the new moon
Mon, Jun 7, 20278:37 AM−0.5 ft0.7 ft3 days after the new moon

What is a king tide?

“King tide” is the everyday name for the highest tides of the year. They come with the new or full moon (spring tides) when the moon is also at its closest to Earth, and they are strongest in the months when the sun lines up too. They are entirely predictable, which is why the dates above are known a year ahead.

King tides in nearby towns

From NOAA tide predictions for Nantucket Island. Heights are feet above mean lower low water (MLLW). Not for navigation.