Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Monday, August 17, 2026
The tide is currently rising in Mattapoisett Harbor, MA.
Next low tide : 5:50 pm (0.6 ft)
Next high tide : in 1h 50m at 12:15 pm (4.4 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 - Aug 1936

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat7:063.67:294.41:030.312:450.15:378:01Full Moon1Sat
2Sun7:524.08:134.61:430.11:330.05:388:00Full Moon2Sun
3Mon8:384.38:584.82:23-0.12:21-0.15:397:59Full Moon3Mon
4Tue9:244.69:444.83:03-0.23:11-0.25:407:58Full Moon4Tue
5Wed10:124.710:334.73:41-0.33:59-0.25:417:56Waning Gibbous5Wed
6Thu11:024.811:234.54:19-0.34:480.05:427:55Waning Gibbous6Thu
7Fri11:544.84:59-0.35:380.25:437:54Waning Gibbous7Fri
8Sat12:174.312:494.75:42-0.16:380.45:447:53Third Quarter8Sat
9Sun1:144.01:464.66:310.18:140.65:457:51Third Quarter9Sun
10Mon2:123.82:464.57:300.310:060.75:467:50Third Quarter10Mon
11Tue3:133.73:504.48:420.511:140.65:477:49Waning Crescent11Tue
12Wed4:183.74:594.310:020.55:487:47Waning Crescent12Wed
13Thu5:253.86:034.412:090.511:14 AM0.55:497:46Waning Crescent13Thu
14Fri6:254.06:584.512:560.512:090.45:507:44Waning Crescent14Fri
15Sat7:174.27:454.61:360.412:550.35:517:43New Moon15Sat
16Sun8:054.48:294.62:080.31:380.25:527:42New Moon16Sun
17Mon8:494.59:094.52:350.22:210.25:537:40New Moon17Mon
18Tue9:304.59:484.33:000.23:030.25:547:39New Moon18Tue
19Wed10:114.410:264.03:280.23:440.25:557:37Waxing Crescent19Wed
20Thu10:504.211:033.83:590.24:230.35:567:36Waxing Crescent20Thu
21Fri11:294.011:413.54:310.35:020.55:577:34Waxing Crescent21Fri
22Sat12:083.85:050.45:430.75:587:33Waxing Crescent22Sat
23Sun12:223.212:493.65:420.56:280.85:597:31First Quarter23Sun
24Mon1:053.11:323.56:240.77:251.06:007:30First Quarter24Mon
25Tue1:512.92:193.47:150.88:451.16:017:28First Quarter25Tue
26Wed2:412.93:113.48:200.810:081.06:027:26First Quarter26Wed
27Thu3:383.04:123.59:320.811:060.86:047:25Waxing Gibbous27Thu
28Fri4:413.25:153.810:390.611:500.56:057:23Waxing Gibbous28Fri
29Sat5:433.56:114.111:360.36:067:22Waxing Gibbous29Sat
30Sun6:373.97:014.512:290.312:260.16:077:20Waxing Gibbous30Sun
31Mon7:264.47:484.71:070.01:15-0.16:087:18Full Moon31Mon
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 3:02 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