42.7056’ N, 70.7890’ W

Plum Island Sound, South End, MA

76°
H -°
L 50°
WNW
10mph
Low tide
6:28 pm

Tides Today & Tomorrow in Plum Island Sound, South End, MA

TIDE TIMES for Friday, September 11, 2026
The tide is currently falling in Plum Island Sound, South End, MA.
Next low tide : in 1h 55m at 6:28 pm (-0.3 ft)
Next high tide (tomorrow) : 12:36 am (9.8 ft)
Sunset today : 7:00 pm
Sunrise tomorrow : 6:18 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #8441241
Common Questions About Tides

Plum Island Sound, South End, MA Tides - Oct 1880

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:568.49:178.82:530.93:130.95:445:28Waning Crescent1Fri
2Sat9:408.810:039.03:380.83:590.55:465:26New Moon2Sat
3Sun10:229.310:469.24:190.64:430.15:475:24New Moon3Sun
4Mon11:039.711:309.35:000.45:27-0.35:485:22New Moon4Mon
5Tue11:4610.15:410.36:11-0.65:495:21New Moon5Tue
6Wed12:159.312:3010.46:230.26:58-0.75:505:19Waxing Crescent6Wed
7Thu1:029.31:1810.67:090.27:48-0.75:515:17Waxing Crescent7Thu
8Fri1:529.22:0910.57:590.28:41-0.65:525:16Waxing Crescent8Fri
9Sat2:459.03:0410.48:530.49:37-0.45:545:14First Quarter9Sat
10Sun3:428.84:0310.19:520.510:37-0.25:555:12First Quarter10Sun
11Mon4:438.75:069.810:550.611:39-0.15:565:11First Quarter11Mon
12Tue5:468.76:119.612:010.65:575:09First Quarter12Tue
13Wed6:508.97:159.512:410.01:050.55:585:07Waxing Gibbous13Wed
14Thu7:509.28:169.41:400.12:070.25:595:06Waxing Gibbous14Thu
15Fri8:469.59:139.32:350.13:040.06:015:04Waxing Gibbous15Fri
16Sat9:379.710:059.23:270.13:57-0.26:025:02Full Moon16Sat
17Sun10:239.810:529.14:150.24:45-0.36:035:01Full Moon17Sun
18Mon11:069.811:358.94:590.45:30-0.36:044:59Full Moon18Mon
19Tue11:469.85:410.66:12-0.26:054:58Full Moon19Tue
20Wed12:168.712:269.66:220.86:540.06:074:56Waning Gibbous20Wed
21Thu12:578.51:079.57:031.07:370.26:084:55Waning Gibbous21Thu
22Fri1:388.31:499.37:451.28:200.56:094:53Waning Gibbous22Fri
23Sat2:228.12:349.08:301.49:070.76:104:52Waning Gibbous23Sat
24Sun3:087.93:228.89:171.69:550.96:124:50Third Quarter24Sun
25Mon3:577.84:138.610:091.710:471.16:134:49Third Quarter25Mon
26Tue4:507.75:088.411:041.811:401.26:144:47Third Quarter26Tue
27Wed5:447.86:048.312:011.76:154:46Third Quarter27Wed
28Thu6:388.06:598.312:331.212:561.56:164:44Waning Crescent28Thu
29Fri7:288.47:528.41:231.11:491.16:184:43Waning Crescent29Fri
30Sat8:168.88:428.62:111.02:400.76:194:42Waning Crescent30Sat
31Sun9:039.39:318.82:580.83:290.26:204:40Waning Crescent31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8441241)

Common Questions About Plum Island Sound, South End, MA Tides

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Is this week a spring tide or neap tide in Plum Island Sound, South End, MA?

Plum Island Sound, South End, MA is currently in a spring phase. Tonight's moon is 0% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Plum Island Sound, South End, MA tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Plum Island Sound, South End, MA?

Tide predictions for Plum Island Sound, South End, MA come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Plum Island Sound, South End, MA?

Tide data for Plum Island Sound, South End, MA is sourced from NOAA Station #8441241. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8441241.

What is the moon phase in Plum Island Sound, South End, MA tonight?

Tonight the moon over Plum Island Sound, South End, MA is New Moon (0% illuminated). This places Plum Island Sound, South End, MA in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA