42.7056’ N, 70.7890’ W

Plum Island Sound, South End, MA

66°
H 80°
L 59°
SW
4mph
High tide
9:31 am

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

TIDE TIMES for Monday, August 24, 2026
The tide is currently rising in Plum Island Sound, South End, MA.
Next low tide : 3:36 pm (1.7 ft)
Next high tide : in 5h 05m at 9:31 am (7.3 ft)
Sunset today : 7:31 pm
Sunrise tomorrow : 5:59 am
Moon phase : Waxing Gibbous (88% illuminated)
Tide Station Location : Station #8441241
Common Questions About Tides

Plum Island Sound, South End, MA Tides - Oct 1922

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:508.48:118.91:400.62:011.05:395:26Waxing Gibbous1Sun
2Mon8:418.49:028.82:330.72:530.95:405:24Waxing Gibbous2Mon
3Tue9:288.69:488.83:210.73:410.85:415:22Waxing Gibbous3Tue
4Wed10:108.710:308.84:050.74:250.75:435:21Full Moon4Wed
5Thu10:488.911:098.84:450.75:060.55:445:19Full Moon5Thu
6Fri11:249.011:468.85:230.85:450.55:455:17Full Moon6Fri
7Sat12:019.16:000.86:240.45:465:15Full Moon7Sat
8Sun12:258.712:389.26:380.97:030.45:475:14Waning Gibbous8Sun
9Mon1:048.71:189.37:161.07:440.45:485:12Waning Gibbous9Mon
10Tue1:468.62:009.37:561.18:280.45:495:10Waning Gibbous10Tue
11Wed2:318.52:469.38:401.19:150.55:515:09Waning Gibbous11Wed
12Thu3:198.43:369.29:281.210:060.55:525:07Third Quarter12Thu
13Fri4:118.34:309.210:211.211:020.55:535:05Third Quarter13Fri
14Sat5:068.45:289.211:201.25:545:04Third Quarter14Sat
15Sun6:058.66:289.412:000.412:210.95:555:02Waning Crescent15Sun
16Mon7:038.97:279.612:580.21:210.55:565:00Waning Crescent16Mon
17Tue8:009.48:269.81:540.02:200.05:584:59Waning Crescent17Tue
18Wed8:5510.09:2210.12:48-0.33:16-0.65:594:57Waning Crescent18Wed
19Thu9:4710.510:1610.23:41-0.64:10-1.06:004:56New Moon19Thu
20Fri10:3910.911:0910.34:32-0.85:03-1.46:014:54New Moon20Fri
21Sat11:2911.25:21-0.95:54-1.66:024:52New Moon21Sat
22Sun12:0010.212:1811.26:11-0.86:45-1.56:044:51Waxing Crescent22Sun
23Mon12:5110.11:0811.07:01-0.67:37-1.36:054:49Waxing Crescent23Mon
24Tue1:429.82:0010.77:52-0.38:29-1.06:064:48Waxing Crescent24Tue
25Wed2:349.42:5210.28:450.19:22-0.56:074:46First Quarter25Wed
26Thu3:289.03:479.79:400.510:17-0.16:094:45First Quarter26Thu
27Fri4:248.74:449.310:370.811:130.36:104:44First Quarter27Fri
28Sat5:218.55:428.911:351.16:114:42First Quarter28Sat
29Sun6:198.46:418.612:100.612:341.16:124:41Waxing Gibbous29Sun
30Mon7:148.47:368.51:040.81:301.16:144:39Waxing Gibbous30Mon
31Tue8:058.58:288.41:560.92:221.06:154:38Waxing Gibbous31Tue
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 88% 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 Waxing Gibbous (88% 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