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

TIDE TIMES for Tuesday, August 4, 2026
The tide is currently rising in Plum Island Sound, South End, MA.
Next low tide : 10:48 pm (0.4 ft)
Next high tide : in 4h 26m at 4:25 pm (9.4 ft)
Sunset today : 8:00 pm
Sunrise tomorrow : 5:38 am
Moon phase : Third Quarter (66% illuminated)
Tide Station Location : Station #8441241
Common Questions About Tides

Plum Island Sound, South End, MA Tides - Jan 1953

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:569.35:491.06:270.17:134:20Full Moon1Thu
2Fri12:287.912:379.26:311.07:070.27:134:21Waning Gibbous2Fri
3Sat1:087.91:189.07:141.07:470.37:134:21Waning Gibbous3Sat
4Sun1:498.02:008.87:571.18:280.57:134:22Waning Gibbous4Sun
5Mon2:308.12:448.68:431.19:090.67:134:23Waning Gibbous5Mon
6Tue3:148.23:308.39:301.19:520.87:134:24Third Quarter6Tue
7Wed3:598.34:198.010:201.110:381.07:134:25Third Quarter7Wed
8Thu4:478.45:117.711:121.111:271.27:134:26Third Quarter8Thu
9Fri5:378.56:067.512:071.17:124:27Third Quarter9Fri
10Sat6:298.67:027.412:181.41:030.97:124:28Waning Crescent10Sat
11Sun7:218.87:577.41:101.41:580.67:124:30Waning Crescent11Sun
12Mon8:149.28:517.62:031.32:510.37:124:31Waning Crescent12Mon
13Tue9:069.59:437.92:551.13:43-0.17:114:32Waning Crescent13Tue
14Wed9:5810.010:348.33:470.74:33-0.57:114:33New Moon14Wed
15Thu10:4910.311:248.74:380.35:22-0.97:104:34New Moon15Thu
16Fri11:3910.65:29-0.16:10-1.17:104:35New Moon16Fri
17Sat12:139.212:3010.76:21-0.46:58-1.37:094:37Waxing Crescent17Sat
18Sun1:029.61:2110.57:14-0.77:46-1.37:094:38Waxing Crescent18Sun
19Mon1:539.92:1410.28:08-0.88:36-1.17:084:39Waxing Crescent19Mon
20Tue2:4510.13:099.89:04-0.79:28-0.87:074:40First Quarter20Tue
21Wed3:3810.14:059.210:02-0.610:21-0.47:074:41First Quarter21Wed
22Thu4:3410.05:048.611:02-0.411:180.17:064:43First Quarter22Thu
23Fri5:329.86:068.212:03-0.17:054:44First Quarter23Fri
24Sat6:329.57:097.812:160.51:050.17:054:45Waxing Gibbous24Sat
25Sun7:319.38:107.61:150.72:050.27:044:47Waxing Gibbous25Sun
26Mon8:299.29:087.62:130.93:030.37:034:48Waxing Gibbous26Mon
27Tue9:239.110:007.63:081.03:550.37:024:49Waxing Gibbous27Tue
28Wed10:129.110:457.73:591.04:420.37:014:50Full Moon28Wed
29Thu10:569.011:267.84:461.05:240.37:004:52Full Moon29Thu
30Fri11:369.05:290.96:020.36:594:53Full Moon30Fri
31Sat12:037.912:148.96:090.96:400.36:584:54Full Moon31Sat
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 7:36 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 66% 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 Third Quarter (66% 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