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

TIDE TIMES for Sunday, July 12, 2026
The tide is currently rising in Plum Island Sound, South End, MA.
Next low tide (tomorrow) : 5:03 am (-0.6 ft)
Next high tide : in 5h 59m at 10:26 pm (10.6 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:16 am
Moon phase : Waning Crescent (5% illuminated)
Tide Station Location : Station #8441241
Common Questions About Tides

Plum Island Sound, South End, MA Tides - Mar 1982

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon3:149.83:449.09:39-0.49:570.06:185:32First Quarter1Mon
2Tue4:089.94:418.710:37-0.310:540.36:175:33First Quarter2Tue
3Wed5:069.85:438.511:39-0.311:550.46:155:34First Quarter3Wed
4Thu6:079.86:468.412:42-0.36:135:35Waxing Gibbous4Thu
5Fri7:109.87:508.412:580.51:45-0.36:125:37Waxing Gibbous5Fri
6Sat8:139.98:518.62:000.42:45-0.46:105:38Waxing Gibbous6Sat
7Sun9:129.99:488.83:000.23:42-0.56:085:39Waxing Gibbous7Sun
8Mon10:0810.010:409.13:570.04:34-0.66:075:40Full Moon8Mon
9Tue11:0010.011:279.24:50-0.25:22-0.66:055:41Full Moon9Tue
10Wed11:479.85:39-0.36:07-0.56:035:43Full Moon10Wed
11Thu12:129.412:329.66:25-0.36:50-0.36:025:44Waning Gibbous11Thu
12Fri12:549.41:159.37:11-0.27:320.06:005:45Waning Gibbous12Fri
13Sat1:369.31:599.07:56-0.18:140.35:585:46Waning Gibbous13Sat
14Sun2:189.22:438.68:410.18:570.65:565:47Waning Gibbous14Sun
15Mon3:029.03:298.39:270.49:431.05:555:49Third Quarter15Mon
16Tue3:488.84:187.910:170.610:321.35:535:50Third Quarter16Tue
17Wed4:378.65:117.611:090.911:241.55:515:51Third Quarter17Wed
18Thu5:318.46:067.512:051.05:495:52Third Quarter18Thu
19Fri6:268.47:027.412:201.61:011.15:485:53Third Quarter19Fri
20Sat7:228.47:577.51:151.61:551.05:465:54Waning Crescent20Sat
21Sun8:158.68:487.82:081.52:460.85:445:56Waning Crescent21Sun
22Mon9:058.89:358.12:591.23:340.65:425:57Waning Crescent22Mon
23Tue9:539.110:198.63:470.94:180.35:415:58New Moon23Tue
24Wed10:389.311:019.04:330.55:000.15:395:59New Moon24Wed
25Thu11:229.611:449.55:170.05:41-0.15:376:00New Moon25Thu
26Fri12:069.76:02-0.46:23-0.35:356:01New Moon26Fri
27Sat12:279.912:539.76:48-0.77:07-0.35:346:03Waxing Crescent27Sat
28Sun1:1210.21:419.67:36-0.97:53-0.35:326:04Waxing Crescent28Sun
29Mon2:0010.42:329.48:27-0.98:43-0.15:306:05Waxing Crescent29Mon
30Tue2:5210.43:269.29:21-0.89:370.15:286:06First Quarter30Tue
31Wed3:4710.34:258.910:19-0.610:360.45:276:07First Quarter31Wed
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8441241)

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

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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 1:44 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 5% 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 Crescent (5% 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