Plum Island, Merrimack River Entrance tide chart
Massachusetts · near Newburyport (3 mi) · NOAA station 8440452 · times in local time (EDT)
Make a pocket card
What's it for?
How many days?
Fits on one page. Fold it in half for your pocket.
Tides today, Sunday, October 11
- High 12:13 AM 8.5 ft
- Low 6:19 AM 0.2 ft
- High 12:29 PM 9.0 ft
- Low 6:48 PM -0.3 ft
Were today's predicted times right where you were?
Sunrise 6:52 AM · Sunset 6:09 PM · New moon (0%)
Plan a trip
Pick what you want to do and we'll find the best days and times coming up.
Free tide emails for Plum Island, Merrimack River Entrance
Pick what's useful. No spam, no sharing your address, unsubscribe in one click.
Weather and conditions at Plum Island, Merrimack River Entrance
Loading the National Weather Service forecast… Open it on weather.gov.
Marine forecast: Coastal Waters from Cape Elizabeth, ME to Merrimack River, MA out 25 NM
Loading the latest National Weather Service forecast… Open it on weather.gov.
- Water temperature —
- Nearest weather buoy Great Bay Buoy (18 mi): waves, wind and water temperature
Marine radio: weather channels and VHF
NOAA Weather Radio
- 162.425 MHz WX4 WNG574, Gloucester Marine, MA (16 mi)
- 162.450 MHz WX5 KZZ40, Deerfield, NH (32 mi)
To get alerts on a weather alert radio, program county code 025009 (Essex).
VHF marine channels
- Ch 16 Distress, safety and calling
- Ch 9 Boater-to-boater calling
- Ch 22A Coast Guard safety broadcasts
- Ch 13 Bridge-to-bridge (big ships, drawbridges)
- Ch 68, 69, 71, 72, 78A Recreational chat
Weather radio broadcasts are continuous; VHF channels are the US standard. Local harbors and bridges may use others, so check your chart.
Live readings from NOAA and the National Weather Service, loaded when you open this page.
How was it out there?
Been to Plum Island, Merrimack River Entrance recently? Tap what you saw to help the next person. No account needed.
Recent reports
- No reports in the last 30 days yet. Be the first.
Reports are from visitors and may be wrong. Inappropriate ones are removed.
Tide times this week
| Day | High and low tides | Sunrise / sunset | Moon |
|---|---|---|---|
| Sun Oct 11 | H 12:13 AM 8.5 ftL 6:19 AM 0.2 ftH 12:29 PM 9.0 ftL 6:48 PM -0.3 ft | 6:52 AM / 6:09 PM | New moon (0%) |
| Mon Oct 12 | H 12:56 AM 8.3 ftL 6:59 AM 0.5 ftH 1:08 PM 8.9 ftL 7:30 PM -0.2 ft | 6:53 AM / 6:07 PM | New moon (2%) |
| Tue Oct 13 | H 1:37 AM 8.0 ftL 7:39 AM 0.7 ftH 1:48 PM 8.8 ftL 8:11 PM 0.0 ft | 6:55 AM / 6:06 PM | Waxing crescent (6%) |
| Wed Oct 14 | H 2:19 AM 7.7 ftL 8:19 AM 1.0 ftH 2:28 PM 8.6 ftL 8:53 PM 0.3 ft | 6:56 AM / 6:04 PM | Waxing crescent (12%) |
| Thu Oct 15 | H 3:02 AM 7.4 ftL 9:01 AM 1.3 ftH 3:11 PM 8.3 ftL 9:39 PM 0.6 ft | 6:57 AM / 6:02 PM | Waxing crescent (19%) |
| Fri Oct 16 | H 3:48 AM 7.1 ftL 9:47 AM 1.6 ftH 3:59 PM 8.0 ftL 10:29 PM 0.8 ft | 6:58 AM / 6:01 PM | Waxing crescent (28%) |
| Sat Oct 17 | H 4:38 AM 6.9 ftL 10:39 AM 1.8 ftH 4:51 PM 7.8 ftL 11:22 PM 1.1 ft | 6:59 AM / 5:59 PM | First quarter (38%) |
Tidal currents near Plum Island, Merrimack River Entrance
From NOAA's current predictions for Merrimack River entrance, 0.5 miles away. Slack is when the current turns and the water is calmest; flood runs in with the rising tide and ebb runs out with the falling tide. Times are the peak of each run, in knots. The flood runs toward the WNW (285°) and the ebb toward the ESE (105°). The strongest current this week is 2.5 knots.
| Day | Slack water and peak currents |
|---|---|
| Sun Oct 11 | Slack 12:54 AMEbb 3:19 AM 1.5 knSlack 7:14 AMFlood 10:33 AM 2.5 knSlack 1:13 PMEbb 3:47 PM 1.7 knSlack 7:48 PMFlood 11:06 PM 2.4 kn |
| Mon Oct 12 | Slack 1:38 AMEbb 4:02 AM 1.4 knSlack 7:58 AMFlood 11:21 AM 2.5 knSlack 1:55 PMEbb 4:31 PM 1.6 knSlack 8:37 PMFlood 11:53 PM 2.4 kn |
| Tue Oct 13 | Slack 2:21 AMEbb 4:39 AM 1.3 knSlack 8:41 AMFlood 12:00 PM 2.4 knSlack 2:36 PMEbb 5:13 PM 1.5 knSlack 9:24 PM |
| Wed Oct 14 | Flood 12:34 AM 2.2 knSlack 3:05 AMEbb 5:10 AM 1.2 knSlack 9:23 AMFlood 12:31 PM 2.2 knSlack 3:19 PMEbb 5:57 PM 1.4 knSlack 10:10 PM |
| Thu Oct 15 | Flood 1:15 AM 2.0 knSlack 3:51 AMEbb 5:38 AM 1.0 knSlack 10:05 AMFlood 12:58 PM 2.0 knSlack 4:04 PMEbb 6:44 PM 1.2 knSlack 10:54 PM |
| Fri Oct 16 | Flood 2:03 AM 1.7 knSlack 4:38 AMEbb 6:17 AM 0.9 knSlack 10:47 AMFlood 1:29 PM 1.7 knSlack 4:49 PMEbb 7:29 PM 1.1 knSlack 11:39 PM |
| Sat Oct 17 | Flood 3:12 AM 1.5 knSlack 5:28 AMEbb 7:08 AM 0.9 knSlack 11:33 AMFlood 2:13 PM 1.5 knSlack 5:37 PMEbb 8:05 PM 1.0 kn |
Current predictions can differ a lot over short distances: check the station location on NOAA before planning a passage.
Best fishing times at Plum Island, Merrimack River Entrance
Solunar periods for this spot: major periods (about two hours) are centred on the moon passing overhead or underfoot, and minor periods (about an hour) on moonrise and moonset. Days near the new and full moon rate higher, and so does a period that lines up with sunrise, sunset or a turn of the tide.
| Day | Rating | Major periods | Minor periods |
|---|---|---|---|
| Sun Oct 11 | Excellent | 11:55 PM–1:55 AM, 12:17 PM–2:17 PM | 7:37 AM–8:37 AM, 5:48 PM–6:48 PM |
| Mon Oct 12 | Excellent | 12:40 AM–2:40 AM, 1:04 PM–3:04 PM | 8:45 AM–9:45 AM, 6:15 PM–7:15 PM |
| Tue Oct 13 | Excellent | 1:27 AM–3:27 AM, 1:52 PM–3:52 PM | 9:51 AM–10:51 AM, 6:47 PM–7:47 PM |
| Wed Oct 14 | Good | 2:16 AM–4:16 AM, 2:42 PM–4:42 PM | 10:54 AM–11:54 AM, 7:25 PM–8:25 PM |
| Thu Oct 15 | Good | 3:07 AM–5:07 AM, 3:32 PM–5:32 PM | 11:52 AM–12:52 PM, 8:12 PM–9:12 PM |
| Fri Oct 16 | Fair | 3:58 AM–5:58 AM, 4:23 PM–6:23 PM | 12:41 PM–1:41 PM, 9:07 PM–10:07 PM |
| Sat Oct 17 | Fair | 4:48 AM–6:48 AM, 5:13 PM–7:13 PM | 1:23 PM–2:23 PM, 10:08 PM–11:08 PM |
Solunar times are a rule of thumb many anglers use, not a guarantee. Moving water around a tide change usually matters as much.
Best daylight low tides in the next two weeks
The lowest water that falls between sunrise and sunset, for tide pooling and beachcombing.
- 0.1 ft at 4:52 PM on Saturday, October 24
- 0.5 ft at 6:59 AM on Monday, October 12
- 0.6 ft at 4:07 PM on Friday, October 23
- 0.7 ft at 7:39 AM on Tuesday, October 13
- 1.0 ft at 8:19 AM on Wednesday, October 14
- 1.1 ft at 3:19 PM on Thursday, October 22
Tide table: October 11 to November 10, 2026
Full 2026 tide table Full 2027 tide table
| Day | High and low tides | Sunrise / sunset |
|---|---|---|
| Sun Oct 11 | H 12:13 AM 8.5 ftL 6:19 AM 0.2 ftH 12:29 PM 9.0 ftL 6:48 PM -0.3 ft | 6:52 AM / 6:09 PM |
| Mon Oct 12 | H 12:56 AM 8.3 ftL 6:59 AM 0.5 ftH 1:08 PM 8.9 ftL 7:30 PM -0.2 ft | 6:53 AM / 6:07 PM |
| Tue Oct 13 | H 1:37 AM 8.0 ftL 7:39 AM 0.7 ftH 1:48 PM 8.8 ftL 8:11 PM 0.0 ft | 6:55 AM / 6:06 PM |
| Wed Oct 14 | H 2:19 AM 7.7 ftL 8:19 AM 1.0 ftH 2:28 PM 8.6 ftL 8:53 PM 0.3 ft | 6:56 AM / 6:04 PM |
| Thu Oct 15 | H 3:02 AM 7.4 ftL 9:01 AM 1.3 ftH 3:11 PM 8.3 ftL 9:39 PM 0.6 ft | 6:57 AM / 6:02 PM |
| Fri Oct 16 | H 3:48 AM 7.1 ftL 9:47 AM 1.6 ftH 3:59 PM 8.0 ftL 10:29 PM 0.8 ft | 6:58 AM / 6:01 PM |
| Sat Oct 17 | H 4:38 AM 6.9 ftL 10:39 AM 1.8 ftH 4:51 PM 7.8 ftL 11:22 PM 1.1 ft | 6:59 AM / 5:59 PM |
| Sun Oct 18 | H 5:33 AM 6.8 ftL 11:34 AM 1.9 ftH 5:47 PM 7.6 ft | 7:00 AM / 5:57 PM |
| Mon Oct 19 | L 12:18 AM 1.2 ftH 6:29 AM 6.7 ftL 12:32 PM 1.9 ftH 6:45 PM 7.5 ft | 7:02 AM / 5:56 PM |
| Tue Oct 20 | L 1:14 AM 1.2 ftH 7:26 AM 6.9 ftL 1:31 PM 1.8 ftH 7:42 PM 7.5 ft | 7:03 AM / 5:54 PM |
| Wed Oct 21 | L 2:08 AM 1.1 ftH 8:19 AM 7.2 ftL 2:28 PM 1.5 ftH 8:37 PM 7.7 ft | 7:04 AM / 5:53 PM |
| Thu Oct 22 | L 2:57 AM 0.9 ftH 9:08 AM 7.6 ftL 3:19 PM 1.1 ftH 9:28 PM 7.8 ft | 7:05 AM / 5:51 PM |
| Fri Oct 23 | L 3:43 AM 0.8 ftH 9:53 AM 8.0 ftL 4:07 PM 0.6 ftH 10:15 PM 8.0 ft | 7:07 AM / 5:50 PM |
| Sat Oct 24 | L 4:25 AM 0.6 ftH 10:35 AM 8.5 ftL 4:52 PM 0.1 ftH 11:00 PM 8.2 ft | 7:08 AM / 5:48 PM |
| Sun Oct 25 | L 5:06 AM 0.4 ftH 11:16 AM 8.9 ftL 5:37 PM -0.3 ftH 11:45 PM 8.3 ft | 7:09 AM / 5:47 PM |
| Mon Oct 26 | L 5:48 AM 0.3 ftH 11:58 AM 9.3 ftL 6:22 PM -0.7 ft | 7:10 AM / 5:45 PM |
| Tue Oct 27 | H 12:30 AM 8.4 ftL 6:31 AM 0.2 ftH 12:42 PM 9.6 ftL 7:08 PM -0.9 ft | 7:12 AM / 5:44 PM |
| Wed Oct 28 | H 1:17 AM 8.4 ftL 7:16 AM 0.2 ftH 1:28 PM 9.8 ftL 7:56 PM -0.9 ft | 7:13 AM / 5:42 PM |
| Thu Oct 29 | H 2:06 AM 8.3 ftL 8:04 AM 0.3 ftH 2:18 PM 9.8 ftL 8:48 PM -0.8 ft | 7:14 AM / 5:41 PM |
| Fri Oct 30 | H 2:58 AM 8.1 ftL 8:57 AM 0.4 ftH 3:12 PM 9.6 ftL 9:43 PM -0.6 ft | 7:15 AM / 5:40 PM |
| Sat Oct 31 | H 3:54 AM 7.9 ftL 9:55 AM 0.6 ftH 4:11 PM 9.3 ftL 10:43 PM -0.3 ft | 7:17 AM / 5:38 PM |
| Sun Nov 1 | H 3:55 AM 7.8 ftL 9:58 AM 0.8 ftH 4:13 PM 8.9 ftL 10:44 PM -0.1 ft | 6:18 AM / 4:37 PM |
| Mon Nov 2 | H 4:58 AM 7.8 ftL 11:04 AM 0.8 ftH 5:19 PM 8.6 ftL 11:47 PM 0.1 ft | 6:19 AM / 4:36 PM |
| Tue Nov 3 | H 6:02 AM 7.9 ftL 12:12 PM 0.8 ftH 6:24 PM 8.4 ft | 6:20 AM / 4:35 PM |
| Wed Nov 4 | L 12:48 AM 0.1 ftH 7:04 AM 8.2 ftL 1:18 PM 0.6 ftH 7:28 PM 8.3 ft | 6:22 AM / 4:33 PM |
| Thu Nov 5 | L 1:46 AM 0.2 ftH 8:01 AM 8.5 ftL 2:19 PM 0.3 ftH 8:27 PM 8.2 ft | 6:23 AM / 4:32 PM |
| Fri Nov 6 | L 2:39 AM 0.3 ftH 8:52 AM 8.7 ftL 3:13 PM 0.1 ftH 9:20 PM 8.1 ft | 6:24 AM / 4:31 PM |
| Sat Nov 7 | L 3:27 AM 0.4 ftH 9:39 AM 8.9 ftL 4:01 PM -0.1 ftH 10:08 PM 8.0 ft | 6:26 AM / 4:30 PM |
| Sun Nov 8 | L 4:11 AM 0.5 ftH 10:21 AM 8.9 ftL 4:46 PM -0.1 ftH 10:52 PM 7.8 ft | 6:27 AM / 4:29 PM |
| Mon Nov 9 | L 4:52 AM 0.7 ftH 11:02 AM 8.8 ftL 5:27 PM -0.1 ftH 11:34 PM 7.7 ft | 6:28 AM / 4:27 PM |
| Tue Nov 10 | L 5:32 AM 0.9 ftH 11:41 AM 8.8 ftL 6:07 PM 0.0 ft | 6:29 AM / 4:26 PM |
Heights are in feet above mean lower low water (MLLW), the zero line on most US nautical charts. A minus height means the water drops below that line.
Around Plum Island, Merrimack River Entrance
Beaches
- Plum Island Beach 0.2 mi
- Salisbury Beach 1.8 mi
- Seabrook Beach 4.6 mi
- South Beach 5.6 mi
Marinas
- Newburyport Harbor Marina 2.3 mi
- Newburyport Public Dock 2.5 mi
- Hilton’s Marina 2.7 mi
- Windward Yacht Yard 2.7 mi
Fishing piers and docks
- G Dock 2.3 mi
- Bailey's Wharf 2.3 mi
- F Dock 2.3 mi
- Fuel Dock 2.4 mi
Distances from the tide station. Places from © OpenStreetMap contributors; links open in Google Maps.
About the tides at Plum Island, Merrimack River Entrance
Plum Island, Merrimack River Entrance gets two high tides and two low tides almost every day, and the two highs are close in height. Over the next month the water typically rises or falls about 7.8 ft between a high and the next low.
The biggest swings in this window come around Wednesday, October 28, when the day's range reaches 10.7 ft, and again around Sunday, October 11 (9.3 ft). Those spring tides follow the new and full moon by a day or two. The calmest day is Monday, October 19, with only 6.3 ft between the day's highest and lowest water.
The lowest tide of the month is -0.9 ft at 7:56 PM on Wednesday, October 28. There are 14 minus tides (lows below the chart's zero line) in this window: the best times for tide pools, clamming and walking the flats.
The highest predicted tide is 9.8 ft at 1:28 PM on Wednesday, October 28. Onshore wind or a storm can push the real water level above that.
This is a reference (harmonic) station: NOAA predicts its tides directly from years of measured water levels here, which makes it among the most reliable predictions on the coast.
Station details
- NOAA station ID: 8440452
- Type: reference (harmonic)
- Location: 42.8167, -70.8200
Nearby tide stations
- Newburyport 3 mi
- Salisbury Point 5 mi
- Hampton Harbor 5 mi
- Plum Island Sound (south end) 8 mi
- Merrimacport 9 mi
- Riverside 11 mi