Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 4h 41m at 9:03 am (-0.6 ft)
Next high tide : 2:47 pm (7.0 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:20 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Nov 2074

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu11:247.011:456.85:330.25:590.37:185:36Waxing Gibbous1Thu
2Fri12:077.26:190.36:460.27:205:34Full Moon2Fri
3Sat12:296.712:477.37:030.47:310.27:215:33Full Moon3Sat
4Sun1:116.712:277.46:460.67:150.26:224:32Full Moon4Sun
5Mon12:526.71:077.57:280.77:570.26:234:31Full Moon5Mon
6Tue1:336.61:477.58:090.88:400.36:254:29Waning Gibbous6Tue
7Wed2:156.52:297.58:511.09:250.46:264:28Waning Gibbous7Wed
8Thu2:596.53:147.49:351.210:110.56:274:27Waning Gibbous8Thu
9Fri3:466.44:017.310:221.311:010.66:284:26Waning Gibbous9Fri
10Sat4:356.34:527.211:131.411:520.66:304:25Third Quarter10Sat
11Sun5:276.35:447.112:071.46:314:24Third Quarter11Sun
12Mon6:206.46:387.112:440.61:021.36:324:23Third Quarter12Mon
13Tue7:146.67:347.11:370.61:591.16:334:22Third Quarter13Tue
14Wed8:096.98:317.22:300.42:540.76:354:21Waning Crescent14Wed
15Thu9:037.39:267.33:200.23:470.36:364:20Waning Crescent15Thu
16Fri9:547.710:197.44:090.04:39-0.16:374:19Waning Crescent16Fri
17Sat10:448.211:117.54:58-0.15:30-0.56:384:18New Moon17Sat
18Sun11:348.55:46-0.26:22-0.86:404:18New Moon18Sun
19Mon12:037.612:248.86:36-0.37:13-1.06:414:17New Moon19Mon
20Tue12:557.51:148.97:25-0.38:04-1.16:424:16Waxing Crescent20Tue
21Wed1:467.42:058.98:16-0.28:56-1.06:434:15Waxing Crescent21Wed
22Thu2:387.32:578.79:08-0.19:49-0.86:454:15Waxing Crescent22Thu
23Fri3:327.13:518.310:030.110:44-0.66:464:14Waxing Crescent23Fri
24Sat4:276.94:477.911:010.311:40-0.46:474:13First Quarter24Sat
25Sun5:246.85:437.511:590.56:484:13First Quarter25Sun
26Mon6:216.76:407.112:35-0.112:570.66:494:12First Quarter26Mon
27Tue7:186.77:386.81:290.11:550.66:504:12Waxing Gibbous27Tue
28Wed8:156.78:356.62:230.22:520.66:524:11Waxing Gibbous28Wed
29Thu9:076.99:286.43:140.33:440.56:534:11Waxing Gibbous29Thu
30Fri9:547.010:166.34:030.44:340.46:544:11Waxing Gibbous30Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8440369)

Common Questions About Merrimacport, MA Tides

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What time does the tide turn (slack tide) in Merrimacport, MA today?

Slack tide in Merrimacport, MA is approximately 11:55 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 Merrimacport, MA?

Merrimacport, MA is currently in a spring phase. Tonight's moon is 7% 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 maximum.

What datum are Merrimacport, 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 Merrimacport, MA?

Tide predictions for Merrimacport, 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 Merrimacport, MA?

Tide data for Merrimacport, MA is sourced from NOAA Station #8440369. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8440369.

What is the moon phase in Merrimacport, MA tonight?

Tonight the moon over Merrimacport, MA is Waxing Crescent (7% illuminated). This places Merrimacport, MA in a spring tide cycle, so tidal ranges are near their weekly maximum 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