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

TIDE TIMES for Sunday, July 12, 2026
The tide is currently falling in Plum Island Sound, South End, MA.
Next low tide : in 2h 27m at 4:12 pm (0.5 ft)
Next high tide : 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 - May 1982

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:339.87:148.912:230.61:04-0.25:377:42First Quarter1Sat
2Sun7:379.58:169.01:280.62:050.05:367:44Waxing Gibbous2Sun
3Mon8:409.39:149.12:310.53:020.15:347:45Waxing Gibbous3Mon
4Tue9:389.210:079.33:300.43:560.25:337:46Waxing Gibbous4Tue
5Wed10:329.010:559.44:250.34:450.45:327:47Waxing Gibbous5Wed
6Thu11:218.911:389.55:140.25:300.55:307:48Full Moon6Thu
7Fri12:058.85:590.16:120.75:297:49Full Moon7Fri
8Sat12:179.512:458.66:410.16:510.95:287:50Full Moon8Sat
9Sun12:559.41:248.57:210.27:301.15:277:51Full Moon9Sun
10Mon1:339.42:038.38:010.28:101.25:267:52Waning Gibbous10Mon
11Tue2:129.32:448.28:430.48:511.45:247:54Waning Gibbous11Tue
12Wed2:549.23:288.19:250.59:351.55:237:55Waning Gibbous12Wed
13Thu3:389.04:138.010:110.710:211.75:227:56Waning Gibbous13Thu
14Fri4:258.95:027.910:580.811:121.85:217:57Third Quarter14Fri
15Sat5:168.75:547.911:490.95:207:58Third Quarter15Sat
16Sun6:098.66:478.112:061.812:421.05:197:59Third Quarter16Sun
17Mon7:058.67:408.31:021.61:340.95:188:00Third Quarter17Mon
18Tue8:008.78:328.71:581.32:260.85:178:01Waning Crescent18Tue
19Wed8:558.89:229.22:530.93:150.65:168:02Waning Crescent19Wed
20Thu9:489.010:119.83:450.44:040.45:158:03Waning Crescent20Thu
21Fri10:409.210:5910.34:37-0.14:520.25:148:04New Moon21Fri
22Sat11:319.411:4810.85:27-0.75:400.05:148:05New Moon22Sat
23Sun12:229.66:17-1.16:29-0.15:138:06New Moon23Sun
24Mon12:3711.11:129.67:08-1.37:19-0.25:128:07New Moon24Mon
25Tue1:2711.22:059.68:00-1.48:11-0.25:118:08Waxing Crescent25Tue
26Wed2:2011.22:599.58:53-1.39:06-0.15:118:09Waxing Crescent26Wed
27Thu3:1511.03:549.49:48-1.110:040.15:108:10Waxing Crescent27Thu
28Fri4:1210.64:529.310:44-0.811:030.35:098:10First Quarter28Fri
29Sat5:1110.15:529.211:42-0.55:098:11First Quarter29Sat
30Sun6:139.76:529.212:050.512:40-0.15:088:12First Quarter30Sun
31Mon7:159.27:519.21:080.61:380.15:088:13First Quarter31Mon
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 7:19 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 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