Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently rising in Mattapoisett Harbor, MA.
Next low tide : 9:11 pm (1.1 ft)
Next high tide : in 3h 55m at 2:45 pm (3.6 ft)
Sunset today : 7:35 pm
Sunrise tomorrow : 5:57 am
Moon phase : First Quarter (55% illuminated)
Tide Station Location : Station #8447531
Common Questions About Tides

Mattapoisett Harbor, MA Tides - Oct 1929

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:194.86:444.712:150.112:170.05:395:26New Moon1Tue
2Wed7:065.07:294.712:460.01:03-0.15:405:24New Moon2Wed
3Thu7:525.18:134.51:160.01:470.05:415:22New Moon3Thu
4Fri8:365.18:564.31:480.02:280.05:425:21New Moon4Fri
5Sat9:194.89:394.02:220.03:070.25:445:19Waxing Crescent5Sat
6Sun10:024.510:243.72:570.23:440.45:455:17Waxing Crescent6Sun
7Mon10:484.111:113.43:340.34:230.65:465:16Waxing Crescent7Mon
8Tue11:363.84:140.65:080.85:475:14First Quarter8Tue
9Wed12:013.112:263.54:580.86:051.05:485:12First Quarter9Wed
10Thu12:533.01:183.35:531.07:401.15:495:11First Quarter10Thu
11Fri1:452.92:133.27:081.19:051.05:505:09First Quarter11Fri
12Sat2:402.93:113.28:371.09:540.95:515:07First Quarter12Sat
13Sun3:393.14:073.39:460.810:320.75:525:06Waxing Gibbous13Sun
14Mon4:333.44:553.510:360.611:040.45:535:04Waxing Gibbous14Mon
15Tue5:183.75:363.811:190.411:350.25:555:03Waxing Gibbous15Tue
16Wed5:584.16:164.011:590.25:565:01Waxing Gibbous16Wed
17Thu6:374.46:564.212:070.012:400.05:575:00Full Moon17Thu
18Fri7:174.77:384.212:40-0.21:22-0.15:584:58Full Moon18Fri
19Sat7:594.98:234.21:17-0.32:05-0.25:594:56Full Moon19Sat
20Sun8:434.99:114.11:56-0.32:48-0.16:004:55Waning Gibbous20Sun
21Mon9:314.810:024.02:37-0.33:320.06:014:53Waning Gibbous21Mon
22Tue10:244.710:583.83:21-0.14:200.26:034:52Waning Gibbous22Tue
23Wed11:234.511:593.74:090.15:180.56:044:51Third Quarter23Wed
24Thu12:254.35:040.37:200.76:054:49Third Quarter24Thu
25Fri1:013.71:294.26:140.68:560.66:064:48Third Quarter25Fri
26Sat2:033.82:344.17:590.79:550.56:074:46Third Quarter26Sat
27Sun3:083.93:404.19:440.510:390.36:094:45Waning Crescent27Sun
28Mon4:124.24:424.210:440.311:150.26:104:44Waning Crescent28Mon
29Tue5:104.55:354.211:310.211:420.16:114:42Waning Crescent29Tue
30Wed6:004.86:224.312:120.16:124:41New Moon30Wed
31Thu6:464.97:064.212:080.012:500.16:134:40New Moon31Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447531)

Common Questions About Mattapoisett Harbor, MA Tides

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What time does the tide turn (slack tide) in Mattapoisett Harbor, MA today?

Slack tide in Mattapoisett Harbor, MA is approximately 5:58 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 Mattapoisett Harbor, MA?

Mattapoisett Harbor, MA is currently in a neap phase. Tonight's moon is 55% 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 Mattapoisett Harbor, 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 Mattapoisett Harbor, MA?

Tide predictions for Mattapoisett Harbor, 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 Mattapoisett Harbor, MA?

Tide data for Mattapoisett Harbor, MA is sourced from NOAA Station #8447531. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8447531.

What is the moon phase in Mattapoisett Harbor, MA tonight?

Tonight the moon over Mattapoisett Harbor, MA is First Quarter (55% illuminated). This places Mattapoisett Harbor, 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