Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Saturday, July 18, 2026
The tide is currently rising in Mattapoisett Harbor, MA.
Next low tide (tomorrow) : 5:58 am (0.2 ft)
Next high tide (tomorrow) : in 3h 57m at 12:16 am (4.2 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 5:24 am
Moon phase : Waxing Crescent (23% illuminated)
Tide Station Location : Station #8447531
Common Questions About Tides

Mattapoisett Harbor, MA Tides - Jul 2068

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:004.210:194.43:430.23:180.25:138:21Waxing Crescent1Sun
2Mon10:444.011:004.14:130.24:020.35:138:21Waxing Crescent2Mon
3Tue11:283.911:413.84:440.34:450.45:148:21Waxing Crescent3Tue
4Wed12:123.85:170.35:290.55:158:20Waxing Crescent4Wed
5Thu12:213.512:553.75:530.46:160.75:158:20First Quarter5Thu
6Fri1:013.31:373.66:320.57:100.85:168:20First Quarter6Fri
7Sat1:423.12:183.57:180.68:160.95:178:19First Quarter7Sat
8Sun2:253.03:013.58:110.69:280.95:178:19First Quarter8Sun
9Mon3:132.93:513.69:070.610:320.85:188:19Waxing Gibbous9Mon
10Tue4:093.04:483.710:040.511:260.65:198:18Waxing Gibbous10Tue
11Wed5:123.15:464.010:590.45:198:18Waxing Gibbous11Wed
12Thu6:113.46:394.312:130.411:50 AM0.25:208:17Waxing Gibbous12Thu
13Fri7:043.77:284.612:570.212:390.05:218:17Full Moon13Fri
14Sat7:544.18:164.91:420.01:29-0.15:228:16Full Moon14Sat
15Sun8:434.49:055.02:28-0.22:20-0.25:238:15Full Moon15Sun
16Mon9:324.69:535.03:13-0.33:13-0.35:238:15Full Moon16Mon
17Tue10:224.710:444.93:55-0.44:05-0.25:248:14Waning Gibbous17Tue
18Wed11:144.811:364.74:36-0.44:56-0.15:258:13Waning Gibbous18Wed
19Thu12:094.85:18-0.35:500.25:268:12Waning Gibbous19Thu
20Fri12:314.51:054.86:03-0.16:560.45:278:12Third Quarter20Fri
21Sat1:274.22:024.76:540.18:460.65:288:11Third Quarter21Sat
22Sun2:254.03:004.57:530.310:160.65:298:10Third Quarter22Sun
23Mon3:243.84:034.49:020.411:210.65:308:09Waning Crescent23Mon
24Tue4:283.75:094.410:110.55:318:08Waning Crescent24Tue
25Wed5:333.76:104.412:140.511:11 AM0.55:328:07Waning Crescent25Wed
26Thu6:313.97:034.51:000.512:010.45:328:06Waning Crescent26Thu
27Fri7:234.07:504.51:390.412:450.35:338:05New Moon27Fri
28Sat8:094.18:334.52:120.41:290.35:348:04New Moon28Sat
29Sun8:534.29:134.42:400.32:130.25:358:03New Moon29Sun
30Mon9:344.29:514.23:080.22:570.25:368:02New Moon30Mon
31Tue10:144.110:274.03:380.23:400.35:378:01Waxing Crescent31Tue
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 3:07 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 23% 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 (23% 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