Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Monday, August 17, 2026
The tide is currently falling in Mattapoisett Harbor, MA.
Next low tide : in 4h 44m at 5:09 am (0.2 ft)
Next high tide : 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 - Apr 1937

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:182.911:353.24:360.34:340.35:266:08Waning Gibbous1Thu
2Fri12:042.85:190.55:190.55:246:09Third Quarter2Fri
3Sat12:223.112:522.86:130.76:160.65:226:10Third Quarter3Sat
4Sun1:133.01:442.87:260.77:290.65:216:11Third Quarter4Sun
5Mon2:083.12:413.08:430.68:500.55:196:12Third Quarter5Mon
6Tue3:093.23:433.39:390.49:570.35:176:13Waning Crescent6Tue
7Wed4:123.44:423.710:240.110:520.05:166:14Waning Crescent7Wed
8Thu5:093.75:354.211:05-0.211:41-0.35:146:15Waning Crescent8Thu
9Fri6:014.16:244.711:46-0.45:136:16New Moon9Fri
10Sat6:504.37:125.012:30-0.512:29-0.65:116:17New Moon10Sat
11Sun7:394.58:015.21:20-0.71:14-0.75:096:18New Moon11Sun
12Mon8:294.58:515.22:11-0.72:01-0.75:086:20New Moon12Mon
13Tue9:204.49:445.13:01-0.62:48-0.65:066:21Waxing Crescent13Tue
14Wed10:144.310:394.83:50-0.43:37-0.45:046:22Waxing Crescent14Wed
15Thu11:114.111:384.54:42-0.14:27-0.15:036:23Waxing Crescent15Thu
16Fri12:114.05:510.25:250.25:016:24First Quarter16Fri
17Sat12:394.21:113.97:430.46:440.55:006:25First Quarter17Sat
18Sun1:403.92:123.88:590.49:000.64:586:26First Quarter18Sun
19Mon2:433.73:143.89:540.410:090.54:576:27Waxing Gibbous19Mon
20Tue3:473.64:164.010:360.410:560.44:556:28Waxing Gibbous20Tue
21Wed4:463.65:114.111:060.311:320.34:546:29Waxing Gibbous21Wed
22Thu5:373.65:584.311:270.34:526:30Waxing Gibbous22Thu
23Fri6:213.76:414.312:020.211:50 AM0.24:516:32Full Moon23Fri
24Sat7:013.77:204.412:340.112:210.14:496:33Full Moon24Sat
25Sun8:403.78:564.31:090.01:560.15:487:34Full Moon25Sun
26Mon9:163.69:324.22:470.02:340.15:467:35Full Moon26Mon
27Tue9:533.510:074.03:250.03:130.15:457:36Full Moon27Tue
28Wed10:303.410:423.84:020.13:520.25:437:37Waning Gibbous28Wed
29Thu11:093.211:213.64:380.24:300.35:427:38Waning Gibbous29Thu
30Fri11:513.15:140.35:090.45:417:39Waning Gibbous30Fri
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 8:42 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 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