Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently rising in Mattapoisett Harbor, MA.
Next low tide (tomorrow) : 8:09 am (0.7 ft)
Next high tide (tomorrow) : in 3h 29m at 2:47 am (3.2 ft)
Sunset today : 8:11 pm
Sunrise tomorrow : 5:27 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8447531
Common Questions About Tides

Mattapoisett Harbor, MA Tides - Jul 1981

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed8:124.58:385.42:10-0.21:35-0.35:128:21New Moon1Wed
2Thu9:044.69:295.33:05-0.22:29-0.25:138:21New Moon2Thu
3Fri9:564.610:205.03:55-0.13:23-0.15:138:21Waxing Crescent3Fri
4Sat10:474.511:104.74:370.04:130.05:148:20Waxing Crescent4Sat
5Sun11:404.45:150.15:010.35:148:20Waxing Crescent5Sun
6Mon12:024.412:334.25:520.35:500.55:158:20Waxing Crescent6Mon
7Tue12:524.01:254.06:310.56:450.75:168:20First Quarter7Tue
8Wed1:423.72:153.97:160.67:530.95:168:19First Quarter8Wed
9Thu2:303.43:053.88:070.79:110.95:178:19First Quarter9Thu
10Fri3:193.23:573.79:010.710:160.95:188:18First Quarter10Fri
11Sat4:123.04:513.79:520.711:070.85:188:18Waxing Gibbous11Sat
12Sun5:083.05:443.710:410.611:520.65:198:17Waxing Gibbous12Sun
13Mon6:023.16:303.911:280.55:208:17Waxing Gibbous13Mon
14Tue6:483.27:104.012:340.512:120.45:218:16Waxing Gibbous14Tue
15Wed7:293.47:494.11:160.412:550.35:228:16Full Moon15Wed
16Thu8:093.68:274.31:580.21:390.25:228:15Full Moon16Thu
17Fri8:493.79:064.42:400.12:220.15:238:14Full Moon17Fri
18Sat9:313.89:474.43:190.13:060.15:248:14Full Moon18Sat
19Sun10:143.910:314.43:540.03:480.15:258:13Waning Gibbous19Sun
20Mon11:004.011:174.34:290.04:310.25:268:12Waning Gibbous20Mon
21Tue11:494.15:040.05:160.25:278:12Waning Gibbous21Tue
22Wed12:084.212:404.25:440.06:070.45:288:11Waning Gibbous22Wed
23Thu1:014.11:344.36:300.17:100.55:298:10Third Quarter23Thu
24Fri1:564.02:294.47:240.28:330.65:298:09Third Quarter24Fri
25Sat2:533.93:274.58:260.210:110.55:308:08Third Quarter25Sat
26Sun3:553.84:314.69:310.211:240.45:318:07Waning Crescent26Sun
27Mon5:013.95:374.810:360.15:328:06Waning Crescent27Mon
28Tue6:064.06:384.912:210.211:35 AM0.05:338:05Waning Crescent28Tue
29Wed7:034.37:325.11:130.112:300.05:348:04New Moon29Wed
30Thu7:574.58:245.12:040.11:23-0.15:358:03New Moon30Thu
31Fri8:474.69:125.12:510.02:16-0.15:368:02New 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 5:28 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 neap phase. Tonight's moon is 52% 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 (52% 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