Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Saturday, August 15, 2026
The tide is currently rising in Mattapoisett Harbor, MA.
Next low tide (tomorrow) : 4:38 am (0.0 ft)
Next high tide : in 5h 21m at 10:57 pm (4.4 ft)
Sunset today : 7:43 pm
Sunrise tomorrow : 5:52 am
Moon phase : Waxing Crescent (11% illuminated)
Tide Station Location : Station #8447531
Common Questions About Tides

Mattapoisett Harbor, MA Tides - Sep 1939

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:054.110:223.93:290.13:550.36:087:18Waning Gibbous1Fri
2Sat10:414.011:013.74:010.14:310.46:097:16Waning Gibbous2Sat
3Sun11:193.911:433.64:340.25:060.56:107:15Waning Gibbous3Sun
4Mon12:033.95:080.35:440.66:117:13Waning Gibbous4Mon
5Tue12:323.412:523.85:480.36:320.76:127:11Third Quarter5Tue
6Wed1:243.41:463.96:370.47:370.86:137:10Third Quarter6Wed
7Thu2:193.42:433.97:390.59:070.86:147:08Third Quarter7Thu
8Fri3:193.53:474.18:530.410:320.66:157:06Waning Crescent8Fri
9Sat4:243.84:544.310:080.311:290.36:167:04Waning Crescent9Sat
10Sun5:294.25:584.611:160.06:177:03Waning Crescent10Sun
11Mon6:284.66:554.912:160.012:16-0.26:187:01Waning Crescent11Mon
12Tue7:235.17:475.21:00-0.21:11-0.46:196:59New Moon12Tue
13Wed8:145.48:385.21:44-0.42:06-0.56:206:58New Moon13Wed
14Thu9:045.69:275.12:29-0.43:00-0.46:216:56New Moon14Thu
15Fri9:555.610:184.93:13-0.43:52-0.36:226:54Waxing Crescent15Fri
16Sat10:465.411:094.63:55-0.34:40-0.16:236:52Waxing Crescent16Sat
17Sun11:395.04:37-0.15:260.26:246:51Waxing Crescent17Sun
18Mon12:034.312:344.75:200.26:180.66:256:49First Quarter18Mon
19Tue12:594.01:314.36:060.57:370.86:266:47First Quarter19Tue
20Wed1:553.72:294.07:030.89:321.06:276:45First Quarter20Wed
21Thu2:523.53:273.88:221.010:320.96:286:44First Quarter21Thu
22Fri3:523.44:293.710:031.011:130.96:296:42Waxing Gibbous22Fri
23Sat4:533.55:273.711:000.811:430.76:306:40Waxing Gibbous23Sat
24Sun4:493.65:173.710:410.711:100.65:315:38Waxing Gibbous24Sun
25Mon5:363.85:573.811:190.511:400.45:335:37Waxing Gibbous25Mon
26Tue6:164.06:343.911:580.45:345:35Full Moon26Tue
27Wed6:514.17:074.012:120.212:370.25:355:33Full Moon27Wed
28Thu7:254.27:414.012:450.11:170.15:365:32Full Moon28Thu
29Fri7:584.38:164.01:190.11:560.15:375:30Full Moon29Fri
30Sat8:324.38:543.91:540.02:320.25:385:28Waning Gibbous30Sat
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 1:47 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 11% 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 (11% 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