Tides Today & Tomorrow in Mattapoisett Harbor, MA

TIDE TIMES for Monday, July 20, 2026
The tide is currently falling in Mattapoisett Harbor, MA.
Next low tide : in 1h 22m at 6:35 am (0.4 ft)
Next high tide : 1:41 pm (4.3 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 5:26 am
Moon phase : First Quarter (42% illuminated)
Tide Station Location : Station #8447531
Common Questions About Tides

Mattapoisett Harbor, MA Tides - May 1982

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:084.03:423.910:280.410:270.55:397:40First Quarter1Sat
2Sun4:133.84:464.011:200.311:310.45:387:41Waxing Gibbous2Sun
3Mon5:173.85:464.212:000.35:377:42Waxing Gibbous3Mon
4Tue6:143.96:394.412:180.312:290.25:357:44Waxing Gibbous4Tue
5Wed7:033.97:254.512:550.212:500.25:347:45Waxing Gibbous5Wed
6Thu7:473.98:074.61:280.11:150.15:337:46Full Moon6Thu
7Fri8:283.98:474.62:020.11:470.15:327:47Full Moon7Fri
8Sat9:083.89:254.42:380.02:230.15:317:48Full Moon8Sat
9Sun9:473.710:024.23:150.03:010.15:297:49Full Moon9Sun
10Mon10:253.510:394.03:530.13:410.25:287:50Waning Gibbous10Mon
11Tue11:053.311:173.74:300.24:200.35:277:51Waning Gibbous11Tue
12Wed11:473.211:583.55:080.35:000.55:267:52Waning Gibbous12Wed
13Thu12:313.05:470.55:420.65:257:53Waning Gibbous13Thu
14Fri12:423.31:173.06:320.66:310.75:247:54Third Quarter14Fri
15Sat1:293.22:043.07:280.77:340.85:237:55Third Quarter15Sat
16Sun2:193.22:543.28:330.78:500.85:227:56Third Quarter16Sun
17Mon3:113.33:483.49:330.510:050.65:217:57Third Quarter17Mon
18Tue4:093.44:463.710:240.311:050.45:207:58Waning Crescent18Tue
19Wed5:113.65:434.111:090.111:570.15:197:59Waning Crescent19Wed
20Thu6:083.86:354.611:53-0.25:188:00Waning Crescent20Thu
21Fri7:024.17:265.012:46-0.212:37-0.45:188:01New Moon21Fri
22Sat7:534.38:165.31:36-0.41:23-0.55:178:02New Moon22Sat
23Sun8:444.59:065.42:29-0.52:12-0.55:168:03New Moon23Sun
24Mon9:364.59:585.33:22-0.53:03-0.55:158:04New Moon24Mon
25Tue10:304.510:525.14:15-0.43:55-0.45:158:05Waxing Crescent25Tue
26Wed11:254.411:494.95:07-0.24:47-0.15:148:05Waxing Crescent26Wed
27Thu12:244.36:040.05:420.15:138:06Waxing Crescent27Thu
28Fri12:494.61:234.27:230.26:480.45:138:07First Quarter28Fri
29Sat1:484.32:224.18:490.48:370.65:128:08First Quarter29Sat
30Sun2:464.03:214.19:530.410:150.65:128:09First Quarter30Sun
31Mon3:463.84:214.110:410.411:150.65:118:10First Quarter31Mon
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 10:08 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 42% 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 (42% 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