NOAA station 8440452, Massachusetts
Plum Island, Merrimack River Entrance tide chart
Friday, October 30Eastern Daylight Time
NOAA harmonic station (NOAA’s page for this station, opens in a new tab)Falling, about 9.6 ft now
As of 3:13 PM EDT
- Next
- Low -0.6 ft at 9:43 PMin 6h 30m
- Then
- High 7.9 ft at 3:54 AMtomorrow, in 12h 41m
High, passed
2:58 AM
8.1 ft
Low, passed
8:57 AM
0.4 ft
High, passed
3:12 PM
9.6 ft
- Next
Low
9:43 PM
-0.6 ft
The week ahead
This week’s tides at Plum Island, Merrimack River Entrance
Every high and low for the next seven days, in feet above MLLW. The 30-day table below has the rest of the month.
| Day | Tide curve | Highs | Lows | Range |
|---|---|---|---|---|
| Fri, Oct 30Range 10.2 ft | 2:58 AM 8.1 ft3:12 PM 9.6 ft | 8:57 AM 0.4 ft9:43 PM -0.6 ft | 10.2 ft | |
| Sat, Oct 31Range 9.7 ft | 3:54 AM 7.9 ft4:11 PM 9.3 ft | 9:55 AM 0.6 ft10:43 PM -0.4 ft | 9.7 ft | |
| Sun, Nov 1Range 9.0 ft | 3:55 AM 7.8 ft4:13 PM 8.9 ft | 9:58 AM 0.8 ft10:44 PM -0.1 ft | 9.0 ft | |
| Mon, Nov 2Range 8.5 ft | 4:58 AM 7.8 ft5:19 PM 8.6 ft | 11:04 AM 0.8 ft11:47 PM 0.1 ft | 8.5 ft | |
| Tue, Nov 3Range 7.6 ft | 6:02 AM 7.9 ft6:24 PM 8.4 ft | 12:12 PM 0.8 ft | 7.6 ft | |
| Wed, Nov 4Range 8.1 ft | 7:04 AM 8.2 ft7:28 PM 8.3 ft | 12:48 AM 0.2 ft1:18 PM 0.6 ft | 8.1 ft | |
| Thu, Nov 5Range 8.3 ft | 8:01 AM 8.5 ft8:27 PM 8.2 ft | 1:46 AM 0.2 ft2:19 PM 0.3 ft | 8.3 ft |
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Plum Island, Merrimack River Entrance tide table for the next 30 days
Every high and low for the next month, with the daily tidal range.
| Day | Highs | Lows | Range |
|---|---|---|---|
| Fri, Oct 30Range 10.2 ft | 2:58 AM 8.1 ft3:12 PM 9.6 ft | 8:57 AM 0.4 ft9:43 PM -0.6 ft | 10.2 ft |
| Sat, Oct 31Range 9.7 ft | 3:54 AM 7.9 ft4:11 PM 9.3 ft | 9:55 AM 0.6 ft10:43 PM -0.4 ft | 9.7 ft |
| Sun, Nov 1Range 9.0 ft | 3:55 AM 7.8 ft4:13 PM 8.9 ft | 9:58 AM 0.8 ft10:44 PM -0.1 ft | 9.0 ft |
| Mon, Nov 2Range 8.5 ft | 4:58 AM 7.8 ft5:19 PM 8.6 ft | 11:04 AM 0.8 ft11:47 PM 0.1 ft | 8.5 ft |
| Tue, Nov 3Range 7.6 ft | 6:02 AM 7.9 ft6:24 PM 8.4 ft | 12:12 PM 0.8 ft | 7.6 ft |
| Wed, Nov 4Range 8.1 ft | 7:04 AM 8.2 ft7:28 PM 8.3 ft | 12:48 AM 0.2 ft1:18 PM 0.6 ft | 8.1 ft |
| Thu, Nov 5Range 8.3 ft | 8:01 AM 8.5 ft8:27 PM 8.2 ft | 1:46 AM 0.2 ft2:19 PM 0.3 ft | 8.3 ft |
| Fri, Nov 6Range 8.6 ft | 8:52 AM 8.7 ft9:20 PM 8.1 ft | 2:39 AM 0.3 ft3:13 PM 0.1 ft | 8.6 ft |
| Sat, Nov 7Range 9.0 ft | 9:39 AM 8.9 ft10:08 PM 8.0 ft | 3:27 AM 0.4 ft4:01 PM -0.1 ft | 9.0 ft |
| Sun, Nov 8Range 9.0 ft | 10:21 AM 8.9 ft10:52 PM 7.8 ft | 4:11 AM 0.5 ft4:46 PM -0.1 ft | 9.0 ft |
| Mon, Nov 9Range 9.0 ft | 11:02 AM 8.9 ft11:34 PM 7.7 ft | 4:52 AM 0.7 ft5:27 PM -0.1 ft | 9.0 ft |
| Tue, Nov 10Range 8.7 ft | 11:41 AM 8.7 ft | 5:32 AM 0.9 ft6:07 PM 0.0 ft | 8.7 ft |
| Wed, Nov 11Range 8.5 ft | 12:14 AM 7.5 ft12:20 PM 8.6 ft | 6:11 AM 1.1 ft6:47 PM 0.1 ft | 8.5 ft |
| Thu, Nov 12Range 8.1 ft | 12:54 AM 7.3 ft1:00 PM 8.4 ft | 6:50 AM 1.3 ft7:27 PM 0.3 ft | 8.1 ft |
Show days 15 to 30Hide days 15 to 30 | |||
| Fri, Nov 13Range 7.8 ft | 1:35 AM 7.2 ft1:42 PM 8.3 ft | 7:32 AM 1.4 ft8:11 PM 0.5 ft | 7.8 ft |
| Sat, Nov 14Range 7.4 ft | 2:19 AM 7.0 ft2:27 PM 8.1 ft | 8:17 AM 1.6 ft8:57 PM 0.7 ft | 7.4 ft |
| Sun, Nov 15Range 7.0 ft | 3:07 AM 6.9 ft3:16 PM 7.8 ft | 9:06 AM 1.7 ft9:47 PM 0.8 ft | 7.0 ft |
| Mon, Nov 16Range 6.7 ft | 3:58 AM 6.9 ft4:09 PM 7.6 ft | 9:59 AM 1.8 ft10:38 PM 0.9 ft | 6.7 ft |
| Tue, Nov 17Range 6.5 ft | 4:51 AM 7.0 ft5:04 PM 7.5 ft | 10:55 AM 1.7 ft11:29 PM 1.0 ft | 6.5 ft |
| Wed, Nov 18Range 5.8 ft | 5:44 AM 7.2 ft6:00 PM 7.4 ft | 11:53 AM 1.6 ft | 5.8 ft |
| Thu, Nov 19Range 6.5 ft | 6:36 AM 7.5 ft6:56 PM 7.4 ft | 12:21 AM 1.0 ft12:49 PM 1.3 ft | 6.5 ft |
| Fri, Nov 20Range 7.0 ft | 7:25 AM 7.9 ft7:50 PM 7.5 ft | 1:11 AM 0.9 ft1:43 PM 0.9 ft | 7.0 ft |
| Sat, Nov 21Range 7.9 ft | 8:13 AM 8.3 ft8:41 PM 7.7 ft | 1:59 AM 0.8 ft2:34 PM 0.4 ft | 7.9 ft |
| Sun, Nov 22Range 8.9 ft | 8:59 AM 8.8 ft9:31 PM 7.9 ft | 2:46 AM 0.7 ft3:23 PM -0.1 ft | 8.9 ft |
| Mon, Nov 23Range 9.8 ft | 9:45 AM 9.2 ft10:20 PM 8.0 ft | 3:32 AM 0.5 ft4:12 PM -0.6 ft | 9.8 ft |
| Tue, Nov 24Range 10.5 ft | 10:31 AM 9.6 ft11:09 PM 8.1 ft | 4:18 AM 0.3 ft5:01 PM -0.9 ft | 10.5 ft |
| Wed, Nov 25Range 11.0 ft | 11:20 AM 9.9 ft11:59 PM 8.2 ft | 5:06 AM 0.2 ft5:50 PM -1.1 ft | 11.0 ft |
| Thu, Nov 26Range 11.2 ft | 12:10 PM 10.0 ft | 5:56 AM 0.1 ft6:41 PM -1.2 ft | 11.2 ft |
| Fri, Nov 27Range 11.0 ft | 12:50 AM 8.2 ft1:02 PM 9.9 ft | 6:47 AM 0.1 ft7:33 PM -1.1 ft | 11.0 ft |
| Sat, Nov 28Range 10.6 ft | 1:43 AM 8.2 ft1:57 PM 9.7 ft | 7:42 AM 0.2 ft8:27 PM -0.9 ft | 10.6 ft |
Conditions at Plum Island, Merrimack River Entrance
From the National Weather Service forecast for this spot and the nearest water temperature reading, with today's sunrise and sunset.
Any date, past or future
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Pick a date to see the tide curve, the highs and lows and sunrise and sunset at Plum Island, Merrimack River Entrance.
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About Plum Island, Merrimack River Entrance tides
Plum Island, Merrimack River Entrance is a NOAA harmonic tide station (8440452): its predictions come from the tidal constituents NOAA derived from water levels measured at this spot. Heights are in feet above MLLW (Mean Lower Low Water), the datum of US nautical charts, so they line up with charted depths.
In the next 30 days, Plum Island, Merrimack River Entrance has two highs and two lows on 26 days and three turns on 4 days, and the daily range runs from 5.8 to 11.2 ft. That is a semidiurnal tide: two highs and two lows a day, each pair close in height.
Use the curve above to time a harbor entrance, a beach walk, fishing a moving tide or clearing a shallow bar, and remember that wind, air pressure and river flow can push the real water level above or below the prediction. The daily tidal range in the tables shows how much water moves each day: bigger ranges around the new and full moon mean stronger currents.
The latest water temperature near Plum Island, Merrimack River Entrance is about 53°F, from NDBC buoy 44074, 18 mi away, at 2:00 PM EDT. Water temperature shapes where fish hold and feed, and tells you what to wear in the water, so check it alongside the tide before you head out.
Frequently asked
What time is high tide in Plum Island, Merrimack River Entrance today?+
Today (Friday, October 30), high tide at Plum Island, Merrimack River Entrance is at 2:58 AM (8.1 ft), 3:12 PM (9.6 ft). Heights are referenced to MLLW (Mean Lower Low Water).
What time is low tide in Plum Island, Merrimack River Entrance today?+
Today, low tide at Plum Island, Merrimack River Entrance is at 8:57 AM (0.4 ft), 9:43 PM (-0.6 ft).
What tidal datum do these Plum Island, Merrimack River Entrance tide heights use?+
All heights are given in feet relative to MLLW (Mean Lower Low Water), the standard NOAA chart datum for US tidal waters. A tide of 0.0 ft equals the chart datum; negative tides fall below it.
How accurate are these tide predictions?+
Plum Island, Merrimack River Entrance is a NOAA harmonic station (8440452), so these are NOAA's harmonic predictions for this spot, which are very accurate for the astronomical tide. Real water levels can still differ with wind, air pressure and river flow, so check conditions before you get underway.
What is the water temperature at Plum Island, Merrimack River Entrance?+
The latest water temperature near Plum Island, Merrimack River Entrance is about 53°F, from NDBC buoy 44074, 18 mi away, at 2:00 PM EDT. Water temperature drives fish behavior and tells you what to wear in the water, so it's worth checking alongside the tide.
Pathr nautical charts
Explore tides on the chart
Find NOAA tide prediction stations on Pathr’s nautical chart. Select a station for today’s high and low tides, or explore another spot nearby.
Nearby tide stations
Bridge clearances near Plum Island, Merrimack River Entrance
Vertical clearance and drawbridge opening schedules for the bridges closest to Plum Island, Merrimack River Entrance. Check them against your air draft before you head out.
