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

TIDE TIMES for Friday, July 10, 2026
The tide is currently rising in Plum Island Sound, South End, MA.
Next low tide (tomorrow) : 3:07 am (-0.1 ft)
Next high tide : in 4h 51m at 8:31 pm (10.0 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 5:14 am
Moon phase : Waning Crescent (20% illuminated)
Tide Station Location : Station #8441241
Common Questions About Tides

Plum Island Sound, South End, MA Tides - Jun 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:349.210:5310.84:30-0.74:420.05:078:14Full Moon1Sat
2Sun11:299.311:4411.05:24-1.05:340.05:078:15Full Moon2Sun
3Mon12:229.26:17-1.26:250.15:068:15Full Moon3Mon
4Tue12:3511.11:139.17:08-1.27:160.25:068:16Full Moon4Tue
5Wed1:2610.92:049.07:59-1.08:080.45:058:17Waning Gibbous5Wed
6Thu2:1710.62:568.88:50-0.79:000.65:058:18Waning Gibbous6Thu
7Fri3:0910.23:488.69:42-0.39:540.85:058:18Waning Gibbous7Fri
8Sat4:029.74:408.510:330.010:491.15:058:19Third Quarter8Sat
9Sun4:559.25:348.411:250.411:461.35:048:19Third Quarter9Sun
10Mon5:508.86:288.412:180.75:048:20Third Quarter10Mon
11Tue6:478.47:218.412:431.41:101.05:048:21Third Quarter11Tue
12Wed7:438.18:118.61:401.32:011.25:048:21Waning Crescent12Wed
13Thu8:378.08:598.72:341.22:491.35:048:22Waning Crescent13Thu
14Fri9:287.89:458.83:251.13:361.55:048:22Waning Crescent14Fri
15Sat10:167.810:289.04:140.94:211.55:048:22Waning Crescent15Sat
16Sun11:017.811:109.15:000.75:051.65:048:23New Moon16Sun
17Mon11:447.811:519.25:430.65:461.65:048:23New Moon17Mon
18Tue12:257.96:240.56:271.55:048:24New Moon18Tue
19Wed12:329.41:067.97:060.47:071.55:048:24New Moon19Wed
20Thu1:139.51:488.17:470.37:491.45:048:24Waxing Crescent20Thu
21Fri1:569.62:338.28:310.28:341.35:058:24Waxing Crescent21Fri
22Sat2:429.73:198.49:160.19:231.15:058:24Waxing Crescent22Sat
23Sun3:319.74:088.610:030.010:161.05:058:25Waxing Crescent23Sun
24Mon4:239.55:008.910:520.111:130.85:058:25First Quarter24Mon
25Tue5:189.45:549.211:440.15:068:25First Quarter25Tue
26Wed6:179.26:509.612:130.612:380.25:068:25First Quarter26Wed
27Thu7:179.07:469.91:140.31:340.35:068:25Waxing Gibbous27Thu
28Fri8:188.88:4210.22:150.02:300.35:078:25Waxing Gibbous28Fri
29Sat9:188.89:3810.53:15-0.33:260.45:078:25Waxing Gibbous29Sat
30Sun10:168.710:3310.64:12-0.64:210.45:088:25Waxing Gibbous30Sun
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 11:49 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 20% 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 (20% 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