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

TIDE TIMES for Sunday, August 2, 2026
The tide is currently rising in Plum Island Sound, South End, MA.
Next low tide (tomorrow) : 9:31 am (0.4 ft)
Next high tide (tomorrow) : in 4h 53m at 3:12 am (9.1 ft)
Sunset today : 8:02 pm
Sunrise tomorrow : 5:36 am
Moon phase : Waning Gibbous (84% illuminated)
Tide Station Location : Station #8441241
Common Questions About Tides

Plum Island Sound, South End, MA Tides - Jan 2095

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:078.57:367.612:591.21:371.07:134:20Waning Crescent1Sat
2Sun7:568.78:287.71:491.32:280.77:134:21Waning Crescent2Sun
3Mon8:449.09:187.82:371.23:180.37:134:22Waning Crescent3Mon
4Tue9:329.410:078.03:241.14:060.07:134:23New Moon4Tue
5Wed10:199.710:548.24:110.94:53-0.47:134:24New Moon5Wed
6Thu11:0610.111:418.54:570.65:39-0.77:134:25New Moon6Thu
7Fri11:5310.45:440.36:26-0.97:124:26New Moon7Fri
8Sat12:298.812:4210.56:330.17:14-1.17:124:27Waxing Crescent8Sat
9Sun1:189.01:3310.57:25-0.18:03-1.17:124:28Waxing Crescent9Sun
10Mon2:099.32:2710.38:19-0.28:54-1.07:124:29Waxing Crescent10Mon
11Tue3:029.53:229.99:16-0.39:47-0.87:114:30First Quarter11Tue
12Wed3:569.64:209.510:15-0.310:42-0.57:114:31First Quarter12Wed
13Thu4:539.75:209.011:17-0.211:39-0.27:114:32First Quarter13Thu
14Fri5:529.76:238.612:19-0.27:104:33First Quarter14Fri
15Sat6:519.77:258.312:370.11:21-0.27:104:34Waxing Gibbous15Sat
16Sun7:499.78:258.21:350.32:20-0.27:094:36Waxing Gibbous16Sun
17Mon8:459.79:238.12:310.53:17-0.27:094:37Waxing Gibbous17Mon
18Tue9:389.610:158.03:250.64:10-0.27:084:38Full Moon18Tue
19Wed10:279.511:028.04:160.74:58-0.27:074:39Full Moon19Wed
20Thu11:129.411:458.05:030.75:42-0.17:074:41Full Moon20Thu
21Fri11:549.35:470.86:230.07:064:42Full Moon21Fri
22Sat12:258.012:359.26:290.87:040.17:054:43Waning Gibbous22Sat
23Sun1:058.01:169.07:120.97:440.27:044:44Waning Gibbous23Sun
24Mon1:458.11:588.87:550.98:240.47:044:46Waning Gibbous24Mon
25Tue2:268.22:418.68:391.09:060.57:034:47Waning Gibbous25Tue
26Wed3:098.23:278.39:251.09:490.87:024:48Third Quarter26Wed
27Thu3:548.34:158.010:141.010:341.07:014:50Third Quarter27Thu
28Fri4:428.35:077.811:071.111:231.27:004:51Third Quarter28Fri
29Sat5:328.46:017.512:021.06:594:52Third Quarter29Sat
30Sun6:248.56:577.512:151.312:570.96:584:53Waning Crescent30Sun
31Mon7:178.77:527.51:071.41:520.66:574:55Waning Crescent31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8441241)

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

Show All
What time does the tide turn (slack tide) in Plum Island Sound, South End, MA today?

Slack tide in Plum Island Sound, South End, MA is approximately 6:21 am — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

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 84% 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 Waning Gibbous (84% 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