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

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in Plum Island Sound, South End, MA.
Next low tide : in 5h 57m at 10:37 am (-0.4 ft)
Next high tide : 4:46 pm (9.3 ft)
Sunset today : 8:24 pm
Sunrise tomorrow : 5:04 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8441241
Common Questions About Tides

Plum Island Sound, South End, MA Tides - May 2037

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri1:0210.81:349.77:28-1.27:43-0.25:367:43Waning Gibbous1Fri
2Sat1:4910.72:239.48:17-1.08:310.15:357:44Waning Gibbous2Sat
3Sun2:3710.43:119.09:06-0.79:200.55:337:46Waning Gibbous3Sun
4Mon3:2510.04:018.79:56-0.310:100.95:327:47Waning Gibbous4Mon
5Tue4:159.64:528.410:470.111:021.25:317:48Third Quarter5Tue
6Wed5:079.15:458.211:390.511:571.45:307:49Third Quarter6Wed
7Thu6:028.86:408.112:330.85:287:50Third Quarter7Thu
8Fri6:588.57:358.112:541.51:271.05:277:51Third Quarter8Fri
9Sat7:548.48:278.21:501.52:201.15:267:52Waning Crescent9Sat
10Sun8:488.39:168.42:441.43:091.15:257:53Waning Crescent10Sun
11Mon9:398.310:028.73:351.23:561.15:247:54Waning Crescent11Mon
12Tue10:268.410:458.94:230.94:401.15:237:55Waning Crescent12Tue
13Wed11:108.511:259.25:080.65:221.05:227:56New Moon13Wed
14Thu11:528.55:510.46:021.05:217:58New Moon14Thu
15Fri12:059.412:348.66:320.26:420.95:197:59New Moon15Fri
16Sat12:459.71:158.77:140.07:220.95:198:00New Moon16Sat
17Sun1:269.91:598.87:57-0.28:040.85:188:01Waxing Crescent17Sun
18Mon2:1110.02:468.88:42-0.38:510.85:178:02Waxing Crescent18Mon
19Tue2:5810.13:358.89:30-0.39:410.85:168:03Waxing Crescent19Tue
20Wed3:5010.04:288.910:22-0.310:370.85:158:04First Quarter20Wed
21Thu4:459.95:249.011:17-0.211:370.75:148:05First Quarter21Thu
22Fri5:439.86:239.112:15-0.25:138:06First Quarter22Fri
23Sat6:459.67:239.412:390.61:13-0.25:128:07First Quarter23Sat
24Sun7:479.58:229.71:420.32:11-0.25:128:08Waxing Gibbous24Sun
25Mon8:499.59:1810.12:440.03:08-0.25:118:08Waxing Gibbous25Mon
26Tue9:489.510:1210.43:42-0.34:02-0.25:108:09Waxing Gibbous26Tue
27Wed10:449.411:0410.64:38-0.64:54-0.15:108:10Full Moon27Wed
28Thu11:379.411:5310.65:31-0.85:440.05:098:11Full Moon28Thu
29Fri12:269.26:21-0.96:320.25:088:12Full Moon29Fri
30Sat12:4010.51:149.17:09-0.87:190.45:088:13Full Moon30Sat
31Sun1:2610.32:008.97:56-0.68:060.65:078:14Waning Gibbous31Sun
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 1:41 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 transitional phase. Tonight's moon is 37% 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 shifting between spring and neap.

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 (37% illuminated). This places Plum Island Sound, South End, MA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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