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 4h 25m 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 - Jan 1983

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat9:095.09:384.42:17-0.83:28-0.57:104:23Waning Gibbous1Sat
2Sun10:034.810:334.33:11-0.64:15-0.47:104:24Waning Gibbous2Sun
3Mon10:584.511:304.24:04-0.45:03-0.27:104:25Waning Gibbous3Mon
4Tue11:544.15:01-0.15:580.07:104:25Third Quarter4Tue
5Wed12:284.112:503.86:110.27:040.17:104:26Third Quarter5Wed
6Thu1:254.01:463.48:030.48:110.27:104:27Third Quarter6Thu
7Fri2:223.92:433.29:250.59:020.37:104:28Third Quarter7Fri
8Sat3:233.83:453.010:220.49:430.37:094:29Waning Crescent8Sat
9Sun4:233.74:453.011:060.410:200.37:094:30Waning Crescent9Sun
10Mon5:183.85:373.111:400.310:580.27:094:31Waning Crescent10Mon
11Tue6:063.86:233.212:120.27:094:32Waning Crescent11Tue
12Wed6:483.97:043.312:460.17:094:34New Moon12Wed
13Thu7:263.97:423.312:190.01:230.07:084:35New Moon13Thu
14Fri8:033.88:193.31:02-0.12:010.07:084:36New Moon14Fri
15Sat8:373.88:563.31:45-0.12:37-0.17:074:37New Moon15Sat
16Sun9:123.79:323.22:27-0.13:11-0.17:074:38Waxing Crescent16Sun
17Mon9:473.510:103.23:06-0.13:42-0.17:064:39Waxing Crescent17Mon
18Tue10:253.410:513.13:430.04:130.07:064:40Waxing Crescent18Tue
19Wed11:073.211:353.24:210.14:460.07:054:42Waxing Crescent19Wed
20Thu11:533.15:040.35:240.07:054:43First Quarter20Thu
21Fri12:213.212:423.05:560.46:120.17:044:44First Quarter21Fri
22Sat1:113.31:363.07:040.47:090.07:034:45First Quarter22Sat
23Sun2:063.52:363.08:290.48:140.07:034:46First Quarter23Sun
24Mon3:083.73:433.19:500.29:20-0.27:024:48Waxing Gibbous24Mon
25Tue4:164.04:493.310:540.010:22-0.47:014:49Waxing Gibbous25Tue
26Wed5:204.35:493.711:49-0.311:20-0.67:004:50Waxing Gibbous26Wed
27Thu6:174.76:444.112:42-0.57:004:51Full Moon27Thu
28Fri7:114.97:364.412:17-0.81:35-0.66:594:53Full Moon28Fri
29Sat8:035.08:284.51:14-0.92:25-0.76:584:54Full Moon29Sat
30Sun8:535.09:194.62:10-0.93:09-0.76:574:55Waning Gibbous30Sun
31Mon9:444.710:114.53:03-0.73:48-0.66:564:56Waning Gibbous31Mon
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