Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Sunday, August 16, 2026
The tide is currently rising in Mattapoisett Harbor, MA.
Next low tide (tomorrow) : 5:09 am (0.2 ft)
Next high tide : in 4h 17m at 11:44 pm (4.0 ft)
Sunset today : 7:41 pm
Sunrise tomorrow : 5:53 am
Moon phase : Waxing Crescent (18% illuminated)
Tide Station Location : Station #8447531
Common Questions About Tides

Mattapoisett Harbor, MA Tides - Sep 1937

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:214.15:574.511:200.36:087:17Waning Crescent1Wed
2Thu6:224.46:524.712:410.312:170.26:097:15Waning Crescent2Thu
3Fri7:154.67:414.81:190.21:050.16:107:14New Moon3Fri
4Sat8:034.98:274.81:520.11:510.06:117:12New Moon4Sat
5Sun8:494.99:104.62:220.12:340.06:127:10New Moon5Sun
6Mon9:334.99:524.42:520.03:160.16:147:09New Moon6Mon
7Tue10:164.710:344.13:240.13:550.26:157:07Waxing Crescent7Tue
8Wed10:584.511:163.83:580.14:330.36:167:05Waxing Crescent8Wed
9Thu11:424.14:330.35:120.56:177:04Waxing Crescent9Thu
10Fri12:003.512:273.85:110.45:550.76:187:02Waxing Crescent10Fri
11Sat12:453.31:133.65:530.66:460.96:197:00First Quarter11Sat
12Sun1:323.12:003.46:420.87:561.16:206:58First Quarter12Sun
13Mon2:213.02:493.37:440.99:271.16:216:57First Quarter13Mon
14Tue3:123.03:433.39:000.910:320.96:226:55First Quarter14Tue
15Wed4:093.14:423.410:140.811:180.76:236:53Waxing Gibbous15Wed
16Thu5:083.35:363.611:120.611:550.56:246:52Waxing Gibbous16Thu
17Fri6:013.66:243.912:000.46:256:50Waxing Gibbous17Fri
18Sat6:474.07:074.212:300.212:430.16:266:48Waxing Gibbous18Sat
19Sun7:304.47:504.41:040.01:270.06:276:46Full Moon19Sun
20Mon8:134.78:344.61:40-0.22:11-0.26:286:45Full Moon20Mon
21Tue8:575.09:204.62:18-0.32:57-0.26:296:43Full Moon21Tue
22Wed9:435.110:094.52:58-0.43:43-0.26:306:41Waning Gibbous22Wed
23Thu10:325.011:004.43:41-0.44:29-0.16:316:39Waning Gibbous23Thu
24Fri11:254.911:554.24:24-0.25:170.26:326:38Waning Gibbous24Fri
25Sat12:234.75:110.06:130.46:336:36Third Quarter25Sat
26Sun12:544.012:234.55:040.26:570.75:345:34Third Quarter26Sun
27Mon12:553.91:264.46:090.58:500.75:355:32Third Quarter27Mon
28Tue1:573.92:304.27:420.69:530.65:365:31Third Quarter28Tue
29Wed3:014.03:364.29:330.610:420.45:375:29Waning Crescent29Wed
30Thu4:064.24:394.310:360.411:210.35:385:27Waning Crescent30Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447531)

Common Questions About Mattapoisett Harbor, MA Tides

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

Slack tide in Mattapoisett Harbor, MA is approximately 2:26 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 spring phase. Tonight's moon is 18% 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 maximum.

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 (18% illuminated). This places Mattapoisett Harbor, MA in a spring tide cycle, so tidal ranges are near their weekly maximum 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