Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Saturday, August 1, 2026
The tide is currently rising in Mattapoisett Harbor, MA.
Next low tide : 4:12 pm (0.3 ft)
Next high tide : in 6h 01m at 10:29 am (3.9 ft)
Sunset today : 8:01 pm
Sunrise tomorrow : 5:37 am
Moon phase : Waning Gibbous (91% illuminated)
Tide Station Location : Station #8447531
Common Questions About Tides

Mattapoisett Harbor, MA Tides - Aug 2087

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:364.610:544.44:020.04:080.25:388:01Waxing Crescent1Fri
2Sat11:224.411:394.04:320.14:490.35:397:59Waxing Crescent2Sat
3Sun12:094.25:050.25:310.55:407:58Waxing Crescent3Sun
4Mon12:243.712:554.05:410.46:170.75:417:57First Quarter4Mon
5Tue1:093.41:413.76:220.57:120.95:427:56First Quarter5Tue
6Wed1:533.22:263.67:100.78:221.05:437:55First Quarter6Wed
7Thu2:393.03:143.58:080.89:421.05:447:53First Quarter7Thu
8Fri3:292.94:083.49:130.810:460.95:457:52Waxing Gibbous8Fri
9Sat4:272.95:063.510:170.711:350.75:467:51Waxing Gibbous9Sat
10Sun5:273.15:593.711:130.55:477:49Waxing Gibbous10Sun
11Mon6:203.46:454.012:180.512:020.45:487:48Waxing Gibbous11Mon
12Tue7:063.77:274.212:570.312:480.25:497:47Full Moon12Tue
13Wed7:494.08:084.51:350.11:320.05:507:45Full Moon13Wed
14Thu8:324.38:514.62:12-0.12:18-0.15:517:44Full Moon14Thu
15Fri9:154.59:354.72:49-0.23:04-0.15:527:43Full Moon15Fri
16Sat10:014.710:224.63:26-0.33:49-0.15:537:41Waning Gibbous16Sat
17Sun10:484.711:114.54:04-0.34:340.05:547:40Waning Gibbous17Sun
18Mon11:404.74:44-0.25:220.15:557:38Waning Gibbous18Mon
19Tue12:044.312:344.75:27-0.16:150.45:567:37Third Quarter19Tue
20Wed1:014.11:324.66:160.17:290.65:577:35Third Quarter20Wed
21Thu1:593.92:314.57:150.39:390.75:587:34Third Quarter21Thu
22Fri2:593.83:344.48:270.410:550.65:597:32Third Quarter22Fri
23Sat4:043.84:424.49:500.511:520.56:007:31Waning Crescent23Sat
24Sun5:114.05:474.511:060.46:017:29Waning Crescent24Sun
25Mon6:124.26:444.612:380.412:040.36:027:27Waning Crescent25Mon
26Tue7:064.57:344.71:180.312:520.26:037:26New Moon26Tue
27Wed7:554.78:194.71:520.21:360.16:047:24New Moon27Wed
28Thu8:414.89:024.62:210.12:190.16:057:23New Moon28Thu
29Fri9:244.79:444.42:490.13:010.16:067:21New Moon29Fri
30Sat10:074.610:244.23:190.13:420.26:077:19Waxing Crescent30Sat
31Sun10:484.411:043.93:520.14:210.36:087:18Waxing Crescent31Sun
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 1:20 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 spring phase. Tonight's moon is 91% 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 Waning Gibbous (91% 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