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

TIDE TIMES for Sunday, June 21, 2026
The tide is currently falling in Plum Island Sound, South End, MA.
Next low tide : in 4h 03m at 11:59 pm (0.6 ft)
Next high tide (tomorrow) : 6:04 am (8.9 ft)
Sunset today : 8:24 pm
Sunrise tomorrow : 5:05 am
Moon phase : First Quarter (48% illuminated)
Tide Station Location : Station #8441241
Common Questions About Tides

Plum Island Sound, South End, MA Tides - May 2013

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:2610.55:049.410:57-0.811:180.15:367:43Third Quarter1Wed
2Thu5:2610.16:049.311:56-0.55:357:44Third Quarter2Thu
3Fri6:289.77:069.312:210.312:56-0.25:347:45Third Quarter3Fri
4Sat7:329.48:079.41:240.31:550.05:327:46Waning Crescent4Sat
5Sun8:339.29:039.52:260.32:510.25:317:48Waning Crescent5Sun
6Mon9:329.09:569.63:240.23:440.35:307:49Waning Crescent6Mon
7Tue10:258.910:459.64:180.14:340.55:297:50Waning Crescent7Tue
8Wed11:148.711:299.65:080.05:200.65:277:51New Moon8Wed
9Thu11:588.65:530.06:030.85:267:52New Moon9Thu
10Fri12:099.612:398.56:350.16:440.95:257:53New Moon10Fri
11Sat12:489.51:188.47:160.17:241.15:247:54New Moon11Sat
12Sun1:279.41:588.37:560.28:051.25:237:55Waxing Crescent12Sun
13Mon2:079.32:398.38:380.48:471.35:227:56Waxing Crescent13Mon
14Tue2:509.23:228.29:200.59:311.45:217:57Waxing Crescent14Tue
15Wed3:349.14:078.210:050.610:181.55:207:58Waxing Crescent15Wed
16Thu4:218.94:558.210:510.811:081.55:197:59First Quarter16Thu
17Fri5:118.75:458.311:400.95:188:00First Quarter17Fri
18Sat6:038.66:378.412:021.512:310.95:178:01First Quarter18Sat
19Sun6:588.57:298.712:571.41:230.95:168:02First Quarter19Sun
20Mon7:538.58:219.11:521.12:140.95:158:03Waxing Gibbous20Mon
21Tue8:478.69:119.52:470.73:040.75:148:04Waxing Gibbous21Tue
22Wed9:418.810:0210.03:390.23:540.55:138:05Waxing Gibbous22Wed
23Thu10:349.010:5210.54:31-0.24:440.35:138:06Full Moon23Thu
24Fri11:259.311:4210.95:23-0.75:330.15:128:07Full Moon24Fri
25Sat12:169.56:13-1.16:24-0.25:118:08Full Moon25Sat
26Sun12:3211.21:089.77:04-1.37:15-0.35:108:09Full Moon26Sun
27Mon1:2411.32:009.87:55-1.48:08-0.35:108:10Waning Gibbous27Mon
28Tue2:1711.22:549.88:48-1.49:04-0.35:098:11Waning Gibbous28Tue
29Wed3:1210.93:499.89:42-1.210:01-0.25:088:12Waning Gibbous29Wed
30Thu4:0910.54:459.710:37-0.911:010.05:088:13Third Quarter30Thu
31Fri5:0710.15:439.711:33-0.55:078:13Third Quarter31Fri
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 3:01 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 neap phase. Tonight's moon is 48% 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 minimum.

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 First Quarter (48% illuminated). This places Plum Island Sound, South End, MA in a neap tide cycle, so tidal ranges are near their weekly minimum 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