Boat or Nope

NOAA CO-OPS 8449130

Nantucket Harbor tide chart

Nantucket Harbor uses NOAA CO-OPS station Nantucket Island (8449130) for tide predictions, datum MLLW. Times are the station's local time.

Today

Sat, Oct 17

4.03.02.01.00.0HighLowHigh
Today's predicted tide, feet above MLLW. High and low marks are the CO-OPS turns.

This week

High and low tides

DayTurnTimeHeight
Sat, Oct 17High5:45 AM2.60 ft
Low11:07 AM1.03 ft
High5:40 PM3.33 ft
Sun, Oct 18Low12:02 AM0.53 ft
High6:35 AM2.59 ft
Low12 PM1.06 ft
High6:33 PM3.26 ft
Mon, Oct 19Low12:53 AM0.58 ft
High7:27 AM2.62 ft
Low12:53 PM1.05 ft
High7:26 PM3.21 ft
Tue, Oct 20Low1:42 AM0.61 ft
High8:17 AM2.71 ft
Low1:49 PM0.99 ft
High8:20 PM3.17 ft
Wed, Oct 21Low2:31 AM0.61 ft
High9:05 AM2.86 ft
Low2:45 PM0.86 ft
High9:13 PM3.15 ft
Thu, Oct 22Low3:16 AM0.59 ft
High9:49 AM3.06 ft
Low3:37 PM0.66 ft
High10:03 PM3.14 ft
Fri, Oct 23Low3:57 AM0.54 ft
High10:30 AM3.28 ft
Low4:26 PM0.41 ft
High10:52 PM3.12 ft

Source and freshness

Retrieved from NOAA CO-OPS. Predictions stay cached for up to 6 hours, the same window harbor pages use. The page refreshes about every 15 minutes. Retrieved Oct 17, 7:39 AM EDT.

CO-OPS station 8449130 · Prediction request

Use the tide with the forecast

Go / No-Go for Nantucket HarborWind, waves, advisories, and this tide station.Forecast widgetPut the harbor call on a marina or club site.Water temperatureNDBC 44020 observations.Nantucket Sound marine forecastCompare harbors around this water.

The same station is the tide reference for Madaket Harbor, Bass Rip, Buzzards Bay, Nantucket Sound, and adjacent waters, Mass Anchorage Area G, Coskata Pond, Glyn's Marine, Head of The Harbor, Miacomet Rip, Nantucket Harbor.

Tide chart questions

Where do the Nantucket Harbor tide times come from?

High and low times come from NOAA CO-OPS station Nantucket Island (8449130). Heights are in feet relative to mean lower low water (MLLW), in the station's local time. This page requests the same predictions product as the Nantucket Harbor harbor briefing.

How current is this tide chart?

These are astronomical predictions. The page shows when Boat or Nope retrieved them from CO-OPS. The response is cached for up to 6 hours, the same window the harbor pages use, and the page itself refreshes about every 15 minutes.

Does the Nantucket Harbor tide chart include storm surge or observed water level?

The chart is the predicted tide. When CO-OPS reports a recent measured water level at this station, the Nantucket Harbor Go/No-Go page compares it with the prediction. This tide page does not add a separate water-level request.

Why is there one tide chart for this station?

Harbors that share station 8449130 use one canonical chart so the same curve is not published as dozens of near-duplicate URLs. Madaket Harbor, Bass Rip, Buzzards Bay, Nantucket Sound, and adjacent waters, Mass Anchorage Area G, Coskata Pond link here.