Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently rising in Mattapoisett Harbor, MA.
Next low tide : 9:11 pm (1.1 ft)
Next high tide : in 5h 41m at 2:45 pm (3.6 ft)
Sunset today : 7:35 pm
Sunrise tomorrow : 5:57 am
Moon phase : First Quarter (55% illuminated)
Tide Station Location : Station #8447531
Common Questions About Tides

Mattapoisett Harbor, MA Tides - Jan 1930

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed8:433.89:023.21:440.02:420.17:104:23New Moon1Wed
2Thu9:193.79:393.12:270.03:170.17:104:24Waxing Crescent2Thu
3Fri9:553.510:183.13:080.13:500.17:104:25Waxing Crescent3Fri
4Sat10:323.310:593.03:470.24:230.27:104:25Waxing Crescent4Sat
5Sun11:133.211:423.04:270.34:560.27:104:26Waxing Crescent5Sun
6Mon11:573.05:100.45:340.27:104:27First Quarter6Mon
7Tue12:273.112:442.96:040.56:200.27:104:28First Quarter7Tue
8Wed1:143.31:352.97:150.67:150.27:104:29First Quarter8Wed
9Thu2:063.42:332.98:370.58:160.17:104:30First Quarter9Thu
10Fri3:053.63:382.99:510.39:17-0.17:094:31Waxing Gibbous10Fri
11Sat4:113.94:443.210:510.010:17-0.37:094:32Waxing Gibbous11Sat
12Sun5:144.25:443.511:45-0.211:13-0.57:094:33Waxing Gibbous12Sun
13Mon6:124.66:393.812:38-0.47:084:35Full Moon13Mon
14Tue7:064.87:324.112:09-0.71:32-0.57:084:36Full Moon14Tue
15Wed7:585.08:244.31:05-0.82:24-0.67:084:37Full Moon15Wed
16Thu8:494.99:164.42:02-0.83:11-0.67:074:38Waning Gibbous16Thu
17Fri9:414.810:094.42:58-0.73:53-0.57:074:39Waning Gibbous17Fri
18Sat10:334.411:034.33:50-0.54:33-0.47:064:40Waning Gibbous18Sat
19Sun11:264.111:594.24:43-0.25:13-0.27:064:41Waning Gibbous19Sun
20Mon12:203.75:430.15:570.07:054:43Third Quarter20Mon
21Tue12:544.01:143.37:080.46:490.27:044:44Third Quarter21Tue
22Wed1:503.82:093.08:480.57:480.37:044:45Third Quarter22Wed
23Thu2:493.63:102.89:570.58:500.47:034:46Waning Crescent23Thu
24Fri3:523.54:152.710:480.59:470.47:024:48Waning Crescent24Fri
25Sat4:543.55:142.811:270.410:360.37:024:49Waning Crescent25Sat
26Sun5:463.56:033.012:010.37:014:50Waning Crescent26Sun
27Mon6:313.66:453.112:350.27:004:51Waning Crescent27Mon
28Tue7:103.77:243.212:050.11:110.16:594:53New Moon28Tue
29Wed7:463.78:013.312:49-0.11:470.06:584:54New Moon29Wed
30Thu8:203.78:363.31:33-0.12:22-0.16:574:55New Moon30Thu
31Fri8:523.79:113.32:14-0.22:53-0.26:564:56New Moon31Fri
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 5:58 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 neap phase. Tonight's moon is 55% 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 minimum.

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 (55% illuminated). This places Mattapoisett Harbor, MA in a neap tide cycle, so tidal ranges are near their weekly minimum 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