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

TIDE TIMES for Tuesday, June 30, 2026
The tide is currently falling in Plum Island Sound, South End, MA.
Next low tide : in 56m at 6:43 pm (1.6 ft)
Next high tide (tomorrow) : 12:49 am (9.2 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:08 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8441241
Common Questions About Tides

Plum Island Sound, South End, MA Tides - Oct 2001

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon11:348.511:528.95:310.85:480.86:406:24Full Moon1Mon
2Tue12:118.76:100.76:270.66:416:23Full Moon2Tue
3Wed12:308.912:479.06:460.77:060.56:426:21Full Moon3Wed
4Thu1:088.91:249.27:230.87:460.46:446:19Waning Gibbous4Thu
5Fri1:488.82:029.38:000.88:260.36:456:17Waning Gibbous5Fri
6Sat2:298.72:449.48:390.99:100.26:466:16Waning Gibbous6Sat
7Sun3:148.63:299.59:211.09:570.36:476:14Waning Gibbous7Sun
8Mon4:028.54:189.510:081.110:490.36:486:12Third Quarter8Mon
9Tue4:558.35:129.511:011.211:470.36:496:10Third Quarter9Tue
10Wed5:528.36:129.512:011.26:506:09Third Quarter10Wed
11Thu6:538.37:149.512:470.31:041.16:526:07Third Quarter11Thu
12Fri7:548.68:179.71:490.22:080.86:536:05Waning Crescent12Fri
13Sat8:549.09:179.92:48-0.13:090.36:546:04Waning Crescent13Sat
14Sun9:519.510:1610.13:44-0.34:07-0.26:556:02Waning Crescent14Sun
15Mon10:4410.011:1110.24:37-0.55:03-0.76:566:01New Moon15Mon
16Tue11:3510.45:28-0.75:56-1.06:575:59New Moon16Tue
17Wed12:0310.212:2410.76:17-0.76:46-1.26:595:57New Moon17Wed
18Thu12:5310.01:1110.87:04-0.57:36-1.27:005:56Waxing Crescent18Thu
19Fri1:429.81:5810.67:51-0.38:25-1.07:015:54Waxing Crescent19Fri
20Sat2:319.42:4610.48:390.19:15-0.67:025:53Waxing Crescent20Sat
21Sun3:209.03:3510.09:280.510:06-0.27:035:51Waxing Crescent21Sun
22Mon4:118.64:269.510:200.910:580.27:055:50First Quarter22Mon
23Tue5:038.25:199.111:131.311:530.67:065:48First Quarter23Tue
24Wed5:598.06:168.712:101.57:075:47First Quarter24Wed
25Thu6:567.87:148.512:490.91:081.67:085:45First Quarter25Thu
26Fri7:527.98:118.41:441.02:051.67:095:44Waxing Gibbous26Fri
27Sat8:458.09:048.42:371.02:581.47:115:42Waxing Gibbous27Sat
28Sun8:338.38:538.52:271.02:491.26:124:41Waxing Gibbous28Sun
29Mon9:178.59:398.53:120.93:350.96:134:40Waxing Gibbous29Mon
30Tue9:588.810:218.63:550.94:190.66:144:38Full Moon30Tue
31Wed10:379.111:028.64:350.95:000.46:164:37Full Moon31Wed
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 9:46 pm — 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 100% 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 Full Moon (100% 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