Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Monday, August 17, 2026
The tide is currently falling in Mattapoisett Harbor, MA.
Next low tide : in 3h 43m at 5:50 pm (0.6 ft)
Next high tide (tomorrow) : 12:32 am (3.7 ft)
Sunset today : 7:40 pm
Sunrise tomorrow : 5:54 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8447531
Common Questions About Tides

Mattapoisett Harbor, MA Tides - Apr 1936

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:523.34:153.510:460.510:430.55:256:08Waxing Gibbous1Wed
2Thu4:513.45:103.711:160.411:170.45:246:09Waxing Gibbous2Thu
3Fri5:393.55:563.811:370.311:480.25:226:10Waxing Gibbous3Fri
4Sat6:203.56:364.011:590.25:206:11Waxing Gibbous4Sat
5Sun6:563.67:124.112:230.112:270.15:196:12Full Moon5Sun
6Mon7:313.67:464.11:00-0.112:590.05:176:13Full Moon6Mon
7Tue8:043.68:194.11:38-0.11:33-0.15:156:14Full Moon7Tue
8Wed8:383.58:524.02:16-0.12:080.05:146:15Full Moon8Wed
9Thu9:133.39:263.82:52-0.12:420.05:126:17Waning Gibbous9Thu
10Fri9:513.210:043.73:260.03:170.15:106:18Waning Gibbous10Fri
11Sat10:333.110:483.54:000.23:530.25:096:19Waning Gibbous11Sat
12Sun11:203.011:383.54:370.34:330.35:076:20Waning Gibbous12Sun
13Mon12:133.05:210.55:230.45:066:21Third Quarter13Mon
14Tue12:333.41:073.16:210.56:290.55:046:22Third Quarter14Tue
15Wed1:313.52:053.37:370.57:510.55:026:23Third Quarter15Wed
16Thu2:323.63:073.68:500.39:150.35:016:24Waning Crescent16Thu
17Fri3:373.74:114.09:470.110:240.04:596:25Waning Crescent17Fri
18Sat4:414.05:104.510:36-0.211:21-0.34:586:26Waning Crescent18Sat
19Sun5:384.26:045.011:22-0.44:566:27Waning Crescent19Sun
20Mon6:314.46:565.312:15-0.512:07-0.64:556:29New Moon20Mon
21Tue7:234.67:465.41:09-0.612:54-0.74:536:30New Moon21Tue
22Wed8:134.68:375.42:03-0.61:42-0.64:526:31New Moon22Wed
23Thu9:054.59:295.12:54-0.52:31-0.54:506:32Waxing Crescent23Thu
24Fri9:574.310:234.83:43-0.33:19-0.24:496:33Waxing Crescent24Fri
25Sat10:524.111:194.34:310.04:070.04:476:34Waxing Crescent25Sat
26Sun12:493.96:270.35:580.45:467:35First Quarter26Sun
27Mon1:174.01:473.77:580.57:010.75:457:36First Quarter27Mon
28Tue2:153.62:443.69:180.68:420.85:437:37First Quarter28Tue
29Wed3:123.43:423.610:110.710:180.85:427:38First Quarter29Wed
30Thu4:113.24:413.610:490.611:080.75:407:39Waxing Gibbous30Thu
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 9:11 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 transitional phase. Tonight's moon is 27% 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 Waxing Crescent (27% 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