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

TIDE TIMES for Tuesday, July 7, 2026
The tide is currently rising in Plum Island Sound, South End, MA.
Next low tide (tomorrow) : 12:10 am (0.8 ft)
Next high tide : in 4h 24m at 5:46 pm (9.1 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:12 am
Moon phase : Third Quarter (52% illuminated)
Tide Station Location : Station #8441241
Common Questions About Tides

Plum Island Sound, South End, MA Tides - Jul 1990

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:008.17:268.912:591.01:141.25:088:25First Quarter1Sun
2Mon7:567.88:178.91:541.02:051.45:098:24Waxing Gibbous2Mon
3Tue8:497.69:068.92:481.02:551.65:098:24Waxing Gibbous3Tue
4Wed9:417.59:548.93:391.03:441.75:108:24Waxing Gibbous4Wed
5Thu10:297.510:409.04:280.94:311.75:118:24Waxing Gibbous5Thu
6Fri11:157.611:239.15:140.85:161.65:118:23Full Moon6Fri
7Sat11:577.75:570.75:591.55:128:23Full Moon7Sat
8Sun12:059.212:377.86:380.56:401.45:138:23Full Moon8Sun
9Mon12:469.41:188.17:180.47:211.35:138:22Full Moon9Mon
10Tue1:279.51:598.37:580.38:041.15:148:22Waning Gibbous10Tue
11Wed2:109.52:418.68:380.28:500.95:158:21Waning Gibbous11Wed
12Thu2:559.53:268.99:200.29:380.75:168:21Waning Gibbous12Thu
13Fri3:429.34:129.210:040.210:290.55:168:20Waning Gibbous13Fri
14Sat4:339.15:029.510:510.311:250.45:178:20Third Quarter14Sat
15Sun5:278.95:559.711:420.45:188:19Third Quarter15Sun
16Mon6:258.66:529.912:230.312:370.65:198:18Third Quarter16Mon
17Tue7:268.47:5010.11:250.11:360.65:208:18Waning Crescent17Tue
18Wed8:288.38:5010.32:26-0.12:350.65:218:17Waning Crescent18Wed
19Thu9:298.49:4910.43:26-0.33:340.55:228:16Waning Crescent19Thu
20Fri10:288.510:4610.64:25-0.54:330.45:228:16New Moon20Fri
21Sat11:248.711:4110.65:21-0.65:290.25:238:15New Moon21Sat
22Sun12:178.96:13-0.76:220.15:248:14New Moon22Sun
23Mon12:3410.51:079.17:03-0.77:140.15:258:13New Moon23Mon
24Tue1:2310.31:559.27:50-0.68:050.15:268:12Waxing Crescent24Tue
25Wed2:1210.02:429.38:36-0.48:550.25:278:11Waxing Crescent25Wed
26Thu3:009.63:289.39:21-0.19:440.45:288:10Waxing Crescent26Thu
27Fri3:489.14:149.210:070.310:340.65:298:09First Quarter27Fri
28Sat4:368.75:019.010:530.711:260.85:308:08First Quarter28Sat
29Sun5:268.25:518.911:411.15:318:07First Quarter29Sun
30Mon6:197.86:428.712:191.012:321.45:328:06First Quarter30Mon
31Tue7:157.57:368.71:141.11:251.65:338:05Waxing Gibbous31Tue
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 8:58 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 neap phase. Tonight's moon is 52% 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 minimum.

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 (52% illuminated). This places Plum Island Sound, South End, MA in a neap tide cycle, so tidal ranges are near their weekly minimum 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