Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently rising in Mattapoisett Harbor, MA.
Next low tide : 7:40 pm (1.0 ft)
Next high tide : in 3h 50m at 1:54 pm (3.9 ft)
Sunset today : 7:37 pm
Sunrise tomorrow : 5:56 am
Moon phase : First Quarter (46% illuminated)
Tide Station Location : Station #8447531
Common Questions About Tides

Mattapoisett Harbor, MA Tides - Jan 1937

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:553.911:253.93:580.04:320.07:104:23Waning Gibbous1Fri
2Sat11:433.54:430.25:080.17:104:24Third Quarter2Sat
3Sun12:153.712:313.25:330.45:500.37:104:25Third Quarter3Sun
4Mon1:053.51:182.96:350.66:410.47:104:26Third Quarter4Mon
5Tue1:543.32:072.77:540.77:400.57:104:27Third Quarter5Tue
6Wed2:463.23:012.69:100.78:410.47:104:28Waning Crescent6Wed
7Thu3:443.24:012.610:070.59:390.37:104:29Waning Crescent7Thu
8Fri4:413.24:562.710:540.410:290.27:104:30Waning Crescent8Fri
9Sat5:283.45:432.911:370.211:150.07:094:31Waning Crescent9Sat
10Sun6:093.66:253.112:180.07:094:32Waning Crescent10Sun
11Mon6:473.87:053.412:59-0.17:094:33New Moon11Mon
12Tue7:254.07:453.512:42-0.21:37-0.27:094:34New Moon12Tue
13Wed8:034.18:263.71:25-0.32:13-0.37:084:35New Moon13Wed
14Thu8:444.19:083.82:07-0.42:46-0.47:084:36Waxing Crescent14Thu
15Fri9:274.19:543.92:49-0.43:19-0.57:074:37Waxing Crescent15Fri
16Sat10:144.010:423.93:31-0.33:54-0.57:074:38Waxing Crescent16Sat
17Sun11:043.811:343.94:15-0.24:33-0.47:074:39Waxing Crescent17Sun
18Mon11:583.65:050.05:19-0.37:064:41First Quarter18Mon
19Tue12:294.012:543.46:070.26:14-0.27:054:42First Quarter19Tue
20Wed1:274.01:543.37:380.37:19-0.17:054:43First Quarter20Wed
21Thu2:294.02:583.39:340.38:330.07:044:44Waxing Gibbous21Thu
22Fri3:374.04:073.410:430.19:46-0.17:044:45Waxing Gibbous22Fri
23Sat4:454.25:113.611:380.010:50-0.27:034:47Waxing Gibbous23Sat
24Sun5:454.46:083.912:27-0.27:024:48Waxing Gibbous24Sun
25Mon6:384.66:594.21:12-0.37:014:49Full Moon25Mon
26Tue7:274.67:484.312:37-0.41:52-0.47:004:50Full Moon26Tue
27Wed8:134.58:344.31:26-0.52:25-0.47:004:52Full Moon27Wed
28Thu8:564.49:194.32:12-0.42:53-0.46:594:53Waning Gibbous28Thu
29Fri9:394.110:044.12:54-0.33:21-0.36:584:54Waning Gibbous29Fri
30Sat10:223.710:493.83:34-0.23:51-0.26:574:55Waning Gibbous30Sat
31Sun11:053.411:343.64:130.04:25-0.16:564:57Waning Gibbous31Sun
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 4:47 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 46% 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 (46% 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