tidealmanac

Plum Island, Merrimack River Entrance, MA tide chart

NOAA station 8440452 · Reference station · Datum MLLW · Local time (America/New_York)

Change stationFull year 2026

Today · Sun, Oct 18

High tideLow tide
8.2 ft2.5 m4.1 ft1.3 m0 ft0.0 m12 AM6 AMNoon6 PM12 AMNow5:33 AM · 6.7 ft5:33 AM · 2.06 m11:34 AM · 1.9 ft11:34 AM · 0.59 m5:47 PM · 7.6 ft5:47 PM · 2.32 m

NOAA six-minute predicted heights for today. Hours in the station's local time.

Next high6:29 AM6.7 ft2.05 m · in 8h 40m
Next low12:18 AM1.2 ft0.36 m · in 2h 29m
Range today5.7 ft1.73 mNow about 3.4 ft1.02 m and falling
MoonFirstFirst quarter · neap tides

October 2026

Full year
Date1st tide2nd tide3rd tide4th tide
1Thu
3:14 AMHigh · 8.1 ft2.48 m
9:15 AMLow · 0.5 ft0.15 m
3:29 PMHigh · 9.3 ft2.84 m
9:59 PMLow · -0.3 ft-0.10 m
2Fri
4:09 AMHigh · 7.8 ft2.39 m
10:10 AMLow · 0.7 ft0.22 m
4:27 PMHigh · 9.1 ft2.78 m
10:59 PMLow · -0.1 ft-0.03 m
3Sat
5:10 AMHigh · 7.6 ft2.31 m
11:11 AMLow · 0.9 ft0.28 m
5:29 PMHigh · 8.9 ft2.71 m
4Sun
12:02 AMLow · 0.1 ft0.03 m
6:14 AMHigh · 7.5 ft2.28 m
12:17 PMLow · 1.0 ft0.31 m
6:35 PMHigh · 8.7 ft2.66 m
5Mon
1:08 AMLow · 0.2 ft0.06 m
7:20 AMHigh · 7.5 ft2.30 m
1:25 PMLow · 0.9 ft0.29 m
7:42 PMHigh · 8.7 ft2.64 m
6Tue
2:12 AMLow · 0.2 ft0.05 m
8:24 AMHigh · 7.8 ft2.38 m
2:32 PMLow · 0.7 ft0.22 m
8:47 PMHigh · 8.7 ft2.65 m
7Wed
3:12 AMLow · 0.1 ft0.02 m
9:23 AMHigh · 8.2 ft2.49 m
3:34 PMLow · 0.4 ft0.12 m
9:46 PMHigh · 8.7 ft2.66 m
8Thu
4:05 AMLow · 0.0 ft-0.01 m
10:16 AMHigh · 8.5 ft2.60 m
4:29 PMLow · 0.1 ft0.02 m
10:39 PMHigh · 8.7 ft2.66 m
9Fri
4:53 AMLow · 0.0 ft-0.01 m
11:03 AMHigh · 8.8 ft2.69 m
5:19 PMLow · -0.2 ft-0.05 m
11:28 PMHigh · 8.6 ft2.63 m
10Sat
5:38 AMLow · 0.1 ft0.02 m
11:47 AMHigh · 9.0 ft2.74 m
6:05 PMLow · -0.3 ft-0.08 m
11Sun
12:13 AMHigh · 8.5 ft2.58 m
6:19 AMLow · 0.2 ft0.07 m
12:29 PMHigh · 9.0 ft2.75 m
6:48 PMLow · -0.3 ft-0.08 m
12Mon
12:56 AMHigh · 8.3 ft2.52 m
6:59 AMLow · 0.5 ft0.14 m
1:08 PMHigh · 8.9 ft2.73 m
7:30 PMLow · -0.2 ft-0.05 m
13Tue
1:37 AMHigh · 8.0 ft2.44 m
7:39 AMLow · 0.7 ft0.22 m
1:48 PMHigh · 8.8 ft2.68 m
8:11 PMLow · 0.0 ft0.01 m
14Wed
2:19 AMHigh · 7.7 ft2.35 m
8:19 AMLow · 1.0 ft0.31 m
2:28 PMHigh · 8.6 ft2.61 m
8:53 PMLow · 0.3 ft0.09 m
15Thu
3:02 AMHigh · 7.4 ft2.26 m
9:01 AMLow · 1.3 ft0.40 m
3:11 PMHigh · 8.3 ft2.53 m
9:39 PMLow · 0.6 ft0.17 m
16Fri
3:48 AMHigh · 7.1 ft2.17 m
9:47 AMLow · 1.6 ft0.48 m
3:59 PMHigh · 8.0 ft2.45 m
10:29 PMLow · 0.8 ft0.26 m
17Sat
4:38 AMHigh · 6.9 ft2.10 m
10:39 AMLow · 1.8 ft0.55 m
4:51 PMHigh · 7.8 ft2.37 m
11:22 PMLow · 1.1 ft0.32 m
18Sun
5:33 AMHigh · 6.7 ft2.06 m
11:34 AMLow · 1.9 ft0.59 m
5:47 PMHigh · 7.6 ft2.32 m
19Mon
12:18 AMLow · 1.2 ft0.36 m
6:29 AMHigh · 6.7 ft2.05 m
12:32 PMLow · 1.9 ft0.59 m
6:45 PMHigh · 7.5 ft2.29 m
20Tue
1:14 AMLow · 1.2 ft0.36 m
7:26 AMHigh · 6.9 ft2.10 m
1:31 PMLow · 1.8 ft0.55 m
7:42 PMHigh · 7.5 ft2.30 m
21Wed
2:08 AMLow · 1.1 ft0.34 m
8:19 AMHigh · 7.2 ft2.18 m
2:28 PMLow · 1.5 ft0.46 m
8:37 PMHigh · 7.7 ft2.34 m
22Thu
2:57 AMLow · 0.9 ft0.28 m
9:08 AMHigh · 7.6 ft2.31 m
3:19 PMLow · 1.1 ft0.33 m
9:28 PMHigh · 7.8 ft2.39 m
23Fri
3:43 AMLow · 0.8 ft0.23 m
9:53 AMHigh · 8.0 ft2.44 m
4:07 PMLow · 0.6 ft0.19 m
10:15 PMHigh · 8.0 ft2.45 m
24Sat
4:25 AMLow · 0.6 ft0.17 m
10:35 AMHigh · 8.5 ft2.59 m
4:52 PMLow · 0.1 ft0.04 m
11:00 PMHigh · 8.2 ft2.50 m
25Sun
5:06 AMLow · 0.4 ft0.13 m
11:16 AMHigh · 8.9 ft2.73 m
5:37 PMLow · -0.3 ft-0.09 m
11:45 PMHigh · 8.3 ft2.54 m
26Mon
5:48 AMLow · 0.3 ft0.09 m
11:58 AMHigh · 9.3 ft2.85 m
6:22 PMLow · -0.7 ft-0.20 m
27Tue
12:30 AMHigh · 8.4 ft2.56 m
6:31 AMLow · 0.2 ft0.07 m
12:42 PMHigh · 9.6 ft2.94 m
7:08 PMLow · -0.9 ft-0.27 m
28Wed
1:17 AMHigh · 8.4 ft2.56 m
7:16 AMLow · 0.2 ft0.06 m
1:28 PMHigh · 9.8 ft2.98 m
7:56 PMLow · -0.9 ft-0.29 m
29Thu
2:06 AMHigh · 8.3 ft2.53 m
8:04 AMLow · 0.3 ft0.08 m
2:18 PMHigh · 9.8 ft2.98 m
8:48 PMLow · -0.8 ft-0.26 m
30Fri
2:58 AMHigh · 8.1 ft2.48 m
8:57 AMLow · 0.4 ft0.13 m
3:12 PMHigh · 9.6 ft2.92 m
9:43 PMLow · -0.6 ft-0.19 m
31Sat
3:54 AMHigh · 7.9 ft2.42 m
9:55 AMLow · 0.6 ft0.18 m
4:11 PMHigh · 9.3 ft2.83 m
10:43 PMLow · -0.4 ft-0.11 m
Thu13:14 AM8.1 ft2.48 m9:15 AM0.5 ft0.15 m3:29 PM9.3 ft2.84 m9:59 PM-0.3 ft-0.10 mFri24:09 AM7.8 ft2.39 m10:10 AM0.7 ft0.22 m4:27 PM9.1 ft2.78 m10:59 PM-0.1 ft-0.03 mSat35:10 AM7.6 ft2.31 m11:11 AM0.9 ft0.28 m5:29 PM8.9 ft2.71 mSun412:02 AM0.1 ft0.03 m6:14 AM7.5 ft2.28 m12:17 PM1.0 ft0.31 m6:35 PM8.7 ft2.66 mMon51:08 AM0.2 ft0.06 m7:20 AM7.5 ft2.30 m1:25 PM0.9 ft0.29 m7:42 PM8.7 ft2.64 mTue62:12 AM0.2 ft0.05 m8:24 AM7.8 ft2.38 m2:32 PM0.7 ft0.22 m8:47 PM8.7 ft2.65 mWed73:12 AM0.1 ft0.02 m9:23 AM8.2 ft2.49 m3:34 PM0.4 ft0.12 m9:46 PM8.7 ft2.66 mShow the whole month

Heights relative to MLLW; times local to the station. Predictions from NOAA CO-OPS; not for navigation.

Nearby stations

Distance from this station. A nearer station is not necessarily the right one for your shore.
NewburyportMA · NOAA 8440466 · 3 mi (4 km)Salisbury PointMA · NOAA 8440273 · 5 mi (8 km)Hampton HarborNH · NOAA 8429489 · 5 mi (9 km)Plum Island Sound (south end)MA · NOAA 8441241 · 8 mi (12 km)