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

TIDE TIMES for Saturday, July 25, 2026
The tide is currently falling in Plum Island Sound, South End, MA.
Next low tide (tomorrow) : in 4h 43m at 4:03 am (1.0 ft)
Next high tide (tomorrow) : 10:05 am (7.4 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:28 am
Moon phase : Waxing Gibbous (86% illuminated)
Tide Station Location : Station #8441241
Common Questions About Tides

Plum Island Sound, South End, MA Tides - Jan 2082

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu12:318.112:419.56:340.77:11-0.17:134:20Waxing Crescent1Thu
2Fri1:148.11:259.27:190.87:540.17:134:21Waxing Crescent2Fri
3Sat1:578.12:098.98:050.98:360.37:134:22Waxing Crescent3Sat
4Sun2:408.22:548.68:521.09:190.67:134:23Waxing Crescent4Sun
5Mon3:258.23:418.39:401.110:040.87:134:24First Quarter5Mon
6Tue4:108.24:317.910:311.210:511.17:134:25First Quarter6Tue
7Wed4:598.35:247.611:251.211:401.37:124:26First Quarter7Wed
8Thu5:498.36:187.412:201.17:124:27First Quarter8Thu
9Fri6:408.47:137.212:311.51:141.07:124:28Waxing Gibbous9Fri
10Sat7:318.68:077.21:221.62:070.97:124:29Waxing Gibbous10Sat
11Sun8:228.88:587.32:121.52:590.67:114:30Waxing Gibbous11Sun
12Mon9:119.19:487.53:021.43:480.37:114:31Waxing Gibbous12Mon
13Tue10:009.410:357.83:501.14:350.07:114:32Full Moon13Tue
14Wed10:479.811:218.24:370.85:21-0.47:104:34Full Moon14Wed
15Thu11:3410.15:250.56:06-0.77:104:35Full Moon15Thu
16Fri12:088.612:2210.26:130.16:51-0.97:094:36Waning Gibbous16Fri
17Sat12:549.01:1110.27:03-0.27:37-1.07:094:37Waning Gibbous17Sat
18Sun1:439.42:0210.17:55-0.48:25-0.97:084:38Waning Gibbous18Sun
19Mon2:339.72:559.78:50-0.59:15-0.77:074:40Waning Gibbous19Mon
20Tue3:259.93:519.39:47-0.510:08-0.47:074:41Third Quarter20Tue
21Wed4:199.94:498.810:46-0.411:030.07:064:42Third Quarter21Wed
22Thu5:179.95:518.311:48-0.37:054:43Third Quarter22Thu
23Fri6:179.86:558.012:020.312:51-0.17:044:45Waning Crescent23Fri
24Sat7:189.67:587.81:020.61:53-0.17:044:46Waning Crescent24Sat
25Sun8:189.58:587.82:020.72:530.07:034:47Waning Crescent25Sun
26Mon9:159.59:547.83:000.83:490.07:024:48Waning Crescent26Mon
27Tue10:089.410:447.93:540.84:400.07:014:50New Moon27Tue
28Wed10:569.411:288.04:440.85:250.07:004:51New Moon28Wed
29Thu11:399.35:300.76:060.16:594:52New Moon29Thu
30Fri12:098.112:209.16:140.76:450.16:584:54New Moon30Fri
31Sat12:478.21:008.96:560.77:240.36:574:55Waxing Crescent31Sat
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 7:04 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 spring phase. Tonight's moon is 86% 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 Waxing Gibbous (86% 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