Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Sunday, June 28, 2026
The tide is currently rising in Merrimacport, MA.
Next low tide : 6:36 pm (1.2 ft)
Next high tide : in 2h 57m at 12:07 pm (5.8 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:07 am
Moon phase : Full Moon (98% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Apr 2050

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:386.79:106.02:561.03:310.76:257:10Waxing Gibbous1Fri
2Sat9:346.610:036.23:510.94:230.76:237:11Waxing Gibbous2Sat
3Sun10:266.610:526.44:430.85:110.66:217:12Waxing Gibbous3Sun
4Mon11:146.711:376.65:320.75:570.66:197:13Waxing Gibbous4Mon
5Tue11:596.76:190.56:410.66:187:14Full Moon5Tue
6Wed12:206.912:426.87:040.47:240.56:167:15Full Moon6Wed
7Thu1:017.11:256.97:480.38:050.56:147:17Full Moon7Thu
8Fri1:437.42:076.98:310.28:450.66:137:18Full Moon8Fri
9Sat2:257.62:507.09:140.19:260.66:117:19Waning Gibbous9Sat
10Sun3:077.83:356.99:570.110:080.76:097:20Waning Gibbous10Sun
11Mon3:527.84:226.910:440.110:540.76:087:21Waning Gibbous11Mon
12Tue4:417.95:136.811:350.111:470.86:067:22Waning Gibbous12Tue
13Wed5:347.96:086.812:290.16:047:24Third Quarter13Wed
14Thu6:297.87:046.812:430.81:250.16:037:25Third Quarter14Thu
15Fri7:267.78:026.91:420.72:220.16:017:26Third Quarter15Fri
16Sat8:267.79:017.12:430.53:200.05:597:27Waning Crescent16Sat
17Sun9:277.610:007.43:430.34:15-0.25:587:28Waning Crescent17Sun
18Mon10:267.610:557.74:410.05:08-0.35:567:29Waning Crescent18Mon
19Tue11:217.611:478.05:36-0.45:59-0.45:557:30Waning Crescent19Tue
20Wed12:157.66:29-0.66:49-0.45:537:32New Moon20Wed
21Thu12:388.31:067.57:21-0.77:38-0.35:517:33New Moon21Thu
22Fri1:268.41:557.38:11-0.88:26-0.25:507:34New Moon22Fri
23Sat2:148.42:427.29:00-0.79:130.05:487:35Waxing Crescent23Sat
24Sun3:008.33:297.09:48-0.510:010.35:477:36Waxing Crescent24Sun
25Mon3:468.04:166.810:37-0.210:510.65:457:37Waxing Crescent25Mon
26Tue4:347.85:056.611:270.111:420.85:447:38Waxing Crescent26Tue
27Wed5:247.55:566.412:180.35:427:40First Quarter27Wed
28Thu6:157.26:476.312:351.01:100.55:417:41First Quarter28Thu
29Fri7:076.97:406.31:291.12:020.75:407:42First Quarter29Fri
30Sat8:016.78:336.42:241.12:550.85:387:43First Quarter30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8440369)

Common Questions About Merrimacport, MA Tides

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

Slack tide in Merrimacport, MA is approximately 3:21 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 98% 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 Full Moon (98% 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