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 6h 25m 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 - Dec 1928

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:584.611:294.03:50-0.25:160.16:504:14Waning Gibbous1Sat
2Sun11:574.24:460.26:440.36:514:13Third Quarter2Sun
3Mon12:293.912:563.95:540.58:030.46:524:13Third Quarter3Mon
4Tue1:283.81:543.68:000.69:010.46:534:13Third Quarter4Tue
5Wed2:273.82:523.49:240.69:430.46:544:13Third Quarter5Wed
6Thu3:273.83:513.310:170.610:120.46:554:13Waning Crescent6Thu
7Fri4:243.94:463.210:550.510:350.36:564:13Waning Crescent7Fri
8Sat5:154.05:343.311:270.411:010.26:574:13Waning Crescent8Sat
9Sun5:594.06:173.311:580.311:340.16:584:13Waning Crescent9Sun
10Mon6:384.16:563.312:330.26:594:13New Moon10Mon
11Tue7:154.17:333.412:110.11:110.17:004:13New Moon11Tue
12Wed7:504.08:093.312:500.01:510.07:014:13New Moon12Wed
13Thu8:253.98:463.31:310.02:300.07:014:13New Moon13Thu
14Fri9:003.89:253.22:120.13:070.17:024:13Waxing Crescent14Fri
15Sat9:383.710:063.12:510.13:420.27:034:13Waxing Crescent15Sat
16Sun10:203.610:503.03:300.24:160.27:034:14Waxing Crescent16Sun
17Mon11:053.511:393.14:100.34:540.37:044:14Waxing Crescent17Mon
18Tue11:553.44:550.45:380.37:054:14First Quarter18Tue
19Wed12:293.212:463.35:510.56:310.37:054:15First Quarter19Wed
20Thu1:213.41:403.37:040.57:310.27:064:15First Quarter20Thu
21Fri2:153.62:393.38:290.48:310.07:064:16First Quarter21Fri
22Sat3:153.93:433.49:450.29:28-0.27:074:16Waxing Gibbous22Sat
23Sun4:174.34:463.610:46-0.110:22-0.47:074:17Waxing Gibbous23Sun
24Mon5:174.65:453.811:40-0.311:14-0.67:084:17Waxing Gibbous24Mon
25Tue6:135.06:404.112:34-0.47:084:18Full Moon25Tue
26Wed7:075.17:334.212:06-0.71:30-0.57:094:18Full Moon26Wed
27Thu7:595.28:254.31:00-0.72:25-0.57:094:19Full Moon27Thu
28Fri8:515.09:184.31:55-0.73:15-0.47:094:20Waning Gibbous28Fri
29Sat9:444.810:114.22:48-0.54:01-0.37:094:21Waning Gibbous29Sat
30Sun10:374.411:074.03:40-0.34:45-0.17:104:21Waning Gibbous30Sun
31Mon11:324.04:310.05:310.17:104:22Waning Gibbous31Mon
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