Plum Island, Merrimack River Entrance, MA tide times

Northeast Massachusetts

Today's tides at Plum Island, Merrimack River Entrance: High 12:12 AM (8.5 ft) · Low 6:21 AM (0.2 ft) · High 12:29 PM (8.8 ft) · Low 6:46 PM (-0.2 ft)

Right now

Today's tide curve · Sunday, Sep 27

Solunar, sun & moon

Bite Excellent

Sunrise: 6:36 AM
Sunset: 6:31 PM
Moonrise: 6:48 PM
Moonset: 7:32 AM

Moon: Full moon · 99%

Feeding periods: Major 11:52 PM–1:52 AM · Minor 7:02 AM–8:02 AM · Major 12:16 PM–2:16 PM · Minor 6:18 PM–7:18 PM

Full 7-day fishing times and solunar calendar →

7-day tide forecast

Sunday, Sep 27

High 12:12 AM 8.5 ft Low 6:21 AM 0.2 ft High 12:29 PM 8.8 ft Low 6:46 PM -0.2 ft

Monday, Sep 28

High 12:54 AM 8.5 ft Low 7:00 AM 0.2 ft High 1:10 PM 9.1 ft Low 7:29 PM -0.4 ft

Tuesday, Sep 29

High 1:38 AM 8.5 ft Low 7:42 AM 0.2 ft High 1:52 PM 9.4 ft Low 8:15 PM -0.6 ft

Wednesday, Sep 30

High 2:24 AM 8.4 ft Low 8:26 AM 0.3 ft High 2:38 PM 9.4 ft Low 9:05 PM -0.5 ft

Thursday, Oct 1

High 3:14 AM 8.1 ft Low 9:15 AM 0.5 ft High 3:30 PM 9.3 ft Low 10:00 PM -0.3 ft

Friday, Oct 2

High 4:09 AM 7.9 ft Low 10:10 AM 0.7 ft High 4:27 PM 9.2 ft Low 10:59 PM -0.1 ft

Saturday, Oct 3

High 5:10 AM 7.6 ft Low 11:12 AM 0.9 ft High 5:29 PM 9.0 ft

Computed from NOAA harmonic constituents. Datum: MLLW. Predictions are estimates for reference only, not for navigation or life-safety decisions.

Slack water

Today's slack water at Plum Island, Merrimack River Entrance: 12:12 AM · 6:21 AM · 12:29 PM · 6:46 PM
Next slack: 12:29 PM

Every high and low in the table above is also the estimated slack water, the pause when the tidal current stops before it reverses. That estimate holds where the tide behaves as a standing wave, which is typical at the head of a bay or harbor. At an ocean inlet, in a channel joining two basins, or in a tidal river, real slack can fall up to about three hours away from the turn.

7-day slack water times, max flood and max ebb →

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Tide questions, answered

What time is high tide today?

High 12:12 AM (8.5 ft) · Low 6:21 AM (0.2 ft) · High 12:29 PM (8.8 ft) · Low 6:46 PM (-0.2 ft)

What is slack water?

Slack water is the short, calm period at the turn of the tide, when the current pauses between flooding and ebbing. It is the prime window many anglers fish.

How long slack water lasts, and why it rarely matches high tide →

Where does this data come from?

Tide times are computed on the page from NOAA harmonic constituents, the same method NOAA uses, so they match the official tables closely.