Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Friday, July 10, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 6h 18m at 3:49 pm (0.7 ft)
Next high tide : 9:41 pm (8.0 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:15 am
Moon phase : Waning Crescent (20% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Jan 2068

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:577.39:256.23:130.73:530.37:144:20Waning Crescent1Sun
2Mon9:487.610:176.34:020.64:430.07:144:21Waning Crescent2Mon
3Tue10:387.911:086.54:510.55:33-0.37:144:22New Moon3Tue
4Wed11:288.211:596.75:400.26:22-0.57:144:23New Moon4Wed
5Thu12:198.46:300.07:11-0.87:144:24New Moon5Thu
6Fri12:507.01:098.67:20-0.27:59-1.07:144:25New Moon6Fri
7Sat1:407.21:598.68:11-0.38:47-1.07:144:26Waxing Crescent7Sat
8Sun2:307.42:508.49:03-0.49:37-0.97:134:27Waxing Crescent8Sun
9Mon3:227.63:438.19:58-0.410:29-0.87:134:28Waxing Crescent9Mon
10Tue4:157.64:387.610:55-0.311:22-0.67:134:29First Quarter10Tue
11Wed5:107.75:337.211:53-0.27:134:30First Quarter11Wed
12Thu6:057.66:306.712:15-0.312:51-0.17:124:31First Quarter12Thu
13Fri7:017.57:286.31:11-0.11:500.07:124:32Waxing Gibbous13Fri
14Sat7:597.48:286.12:070.12:480.17:124:33Waxing Gibbous14Sat
15Sun8:567.39:255.93:020.33:440.17:114:34Waxing Gibbous15Sun
16Mon9:497.310:185.93:550.44:360.17:114:36Waxing Gibbous16Mon
17Tue10:387.311:065.94:450.45:250.17:104:37Full Moon17Tue
18Wed11:247.311:516.05:340.56:120.07:094:38Full Moon18Wed
19Thu12:077.36:210.56:560.07:094:39Full Moon19Thu
20Fri12:336.112:497.37:060.57:390.07:084:41Full Moon20Fri
21Sat1:156.31:307.37:500.58:200.17:074:42Waning Gibbous21Sat
22Sun1:566.42:127.28:330.59:020.17:074:43Waning Gibbous22Sun
23Mon2:376.62:557.19:170.69:440.37:064:44Waning Gibbous23Mon
24Tue3:216.73:396.910:030.610:280.47:054:46Waning Gibbous24Tue
25Wed4:076.84:276.710:520.711:140.57:044:47Third Quarter25Wed
26Thu4:546.85:166.511:430.77:044:48Third Quarter26Thu
27Fri5:436.96:076.312:010.712:360.87:034:50Third Quarter27Fri
28Sat6:357.07:016.112:510.81:310.77:024:51Third Quarter28Sat
29Sun7:297.17:586.11:450.82:280.57:014:52Waning Crescent29Sun
30Mon8:247.38:556.12:400.83:230.37:004:53Waning Crescent30Mon
31Tue9:207.69:506.33:330.64:160.06:594:55Waning Crescent31Tue
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 6:45 pm — 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 20% 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 Waning Crescent (20% 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