Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Friday, August 21, 2026
The tide is currently falling in Mattapoisett Harbor, MA.
Next low tide : in 4h 54m at 10:28 pm (1.1 ft)
Next high tide (tomorrow) : 4:01 am (2.9 ft)
Sunset today : 7:34 pm
Sunrise tomorrow : 5:58 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8447531
Common Questions About Tides

Mattapoisett Harbor, MA Tides - Oct 1928

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon8:505.29:154.62:06-0.42:51-0.35:405:25Waning Gibbous1Mon
2Tue9:395.210:074.42:48-0.43:38-0.15:415:24Waning Gibbous2Tue
3Wed10:335.011:034.13:31-0.24:290.15:425:22Waning Gibbous3Wed
4Thu11:314.84:170.05:310.55:435:20Third Quarter4Thu
5Fri12:033.912:324.55:100.37:400.75:445:19Third Quarter5Fri
6Sat1:043.81:364.36:160.69:080.75:455:17Third Quarter6Sat
7Sun2:073.72:424.27:560.710:100.65:465:15Third Quarter7Sun
8Mon3:133.83:504.19:480.710:580.55:475:14Waning Crescent8Mon
9Tue4:184.04:524.210:470.511:360.45:485:12Waning Crescent9Tue
10Wed5:154.25:444.311:290.45:495:10Waning Crescent10Wed
11Thu6:044.56:284.312:040.312:050.35:505:09Waning Crescent11Thu
12Fri6:484.67:094.312:250.312:380.25:525:07New Moon12Fri
13Sat7:294.77:484.212:470.21:140.25:535:05New Moon13Sat
14Sun8:074.68:254.01:150.11:510.25:545:04New Moon14Sun
15Mon8:444.59:023.81:480.12:290.25:555:02Waxing Crescent15Mon
16Tue9:204.39:403.52:230.23:070.35:565:01Waxing Crescent16Tue
17Wed9:564.010:193.32:590.33:440.45:574:59Waxing Crescent17Wed
18Thu10:353.711:023.13:360.54:230.65:584:58Waxing Crescent18Thu
19Fri11:183.511:492.94:140.65:060.85:594:56Waxing Crescent19Fri
20Sat12:063.34:570.86:011.06:014:55First Quarter20Sat
21Sun12:392.912:583.35:510.97:241.06:024:53First Quarter21Sun
22Mon1:312.91:523.37:041.08:470.96:034:52First Quarter22Mon
23Tue2:263.12:503.48:290.99:380.76:044:50First Quarter23Tue
24Wed3:253.43:513.69:390.610:170.46:054:49Waxing Gibbous24Wed
25Thu4:243.84:473.910:330.310:540.16:064:47Waxing Gibbous25Thu
26Fri5:164.25:394.211:210.011:31-0.26:084:46Waxing Gibbous26Fri
27Sat6:054.76:284.512:08-0.26:094:45Full Moon27Sat
28Sun6:525.17:164.612:10-0.412:57-0.46:104:43Full Moon28Sun
29Mon7:405.48:064.612:53-0.61:47-0.46:114:42Full Moon29Mon
30Tue8:295.48:564.51:37-0.62:39-0.46:124:41Waning Gibbous30Tue
31Wed9:205.39:504.32:24-0.53:29-0.26:144:39Waning Gibbous31Wed
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 1:14 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 Mattapoisett Harbor, MA?

Mattapoisett Harbor, MA is currently in a transitional phase. Tonight's moon is 65% 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 shifting between spring and neap.

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 (65% illuminated). This places Mattapoisett Harbor, MA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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