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

TIDE TIMES for Saturday, July 25, 2026
The tide is currently rising in Plum Island Sound, South End, MA.
Next low tide (tomorrow) : 4:03 am (1.0 ft)
Next high tide : in 5h 14m at 9:28 pm (8.8 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 - Jun 1968

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:269.14:047.910:000.610:071.75:078:14Waxing Crescent1Sat
2Sun4:149.14:528.110:470.710:591.65:068:15First Quarter2Sun
3Mon5:068.95:448.311:360.711:561.45:068:16First Quarter3Mon
4Tue6:018.86:378.712:280.75:068:16First Quarter4Tue
5Wed6:588.87:319.112:551.11:200.75:058:17First Quarter5Wed
6Thu7:568.88:249.61:540.72:130.65:058:18Waxing Gibbous6Thu
7Fri8:548.89:1710.12:520.23:060.55:058:18Waxing Gibbous7Fri
8Sat9:518.910:1010.63:48-0.33:590.45:048:19Waxing Gibbous8Sat
9Sun10:479.011:0310.94:43-0.74:520.35:048:20Full Moon9Sun
10Mon11:429.011:5611.15:38-1.05:450.25:048:20Full Moon10Mon
11Tue12:359.16:31-1.26:370.15:048:21Full Moon11Tue
12Wed12:4911.11:279.17:23-1.27:310.15:048:21Waning Gibbous12Wed
13Thu1:4211.02:219.18:16-1.08:250.25:048:22Waning Gibbous13Thu
14Fri2:3510.73:149.09:08-0.89:210.45:048:22Waning Gibbous14Fri
15Sat3:3010.24:088.910:01-0.410:170.65:048:22Waning Gibbous15Sat
16Sun4:259.75:038.910:54-0.111:150.85:048:23Third Quarter16Sun
17Mon5:219.25:588.811:470.35:048:23Third Quarter17Mon
18Tue6:188.76:528.812:140.912:400.65:048:24Third Quarter18Tue
19Wed7:168.37:458.81:121.01:321.05:048:24Third Quarter19Wed
20Thu8:128.08:358.92:091.02:231.25:048:24Waning Crescent20Thu
21Fri9:067.89:238.93:020.93:121.45:058:24Waning Crescent21Fri
22Sat9:567.710:089.03:530.93:591.65:058:24Waning Crescent22Sat
23Sun10:437.610:529.04:400.84:441.75:058:25Waning Crescent23Sun
24Mon11:277.611:339.15:250.75:271.75:058:25New Moon24Mon
25Tue12:087.66:070.76:081.75:068:25New Moon25Tue
26Wed12:149.212:487.76:480.66:491.65:068:25New Moon26Wed
27Thu12:549.21:287.87:280.57:291.65:068:25New Moon27Thu
28Fri1:359.32:097.98:090.58:111.55:078:25Waxing Crescent28Fri
29Sat2:179.42:528.18:500.48:561.45:078:25Waxing Crescent29Sat
30Sun3:029.33:378.49:330.49:431.25:088:25Waxing Crescent30Sun
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 12:45 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