Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Tuesday, June 30, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 4h 27m at 8:04 pm (1.2 ft)
Next high tide (tomorrow) : 1:48 am (7.5 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:08 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Apr 2052

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon2:118.42:388.08:55-0.99:14-0.56:247:10Waxing Crescent1Mon
2Tue3:008.63:287.89:45-1.010:03-0.46:227:11Waxing Crescent2Tue
3Wed3:508.64:217.610:38-0.910:56-0.26:207:13Waxing Crescent3Wed
4Thu4:438.55:157.311:34-0.711:510.06:197:14First Quarter4Thu
5Fri5:388.26:127.012:30-0.56:177:15First Quarter5Fri
6Sat6:357.97:096.812:490.21:27-0.36:157:16First Quarter6Sat
7Sun7:337.68:086.61:470.32:25-0.16:137:17First Quarter7Sun
8Mon8:337.39:096.62:460.43:220.16:127:18Waxing Gibbous8Mon
9Tue9:337.110:066.73:450.44:170.16:107:20Waxing Gibbous9Tue
10Wed10:297.010:586.84:400.45:080.26:087:21Waxing Gibbous10Wed
11Thu11:196.911:446.95:310.35:560.26:077:22Waxing Gibbous11Thu
12Fri12:056.96:200.26:410.36:057:23Full Moon12Fri
13Sat12:277.112:496.87:070.27:260.46:037:24Full Moon13Sat
14Sun1:077.21:306.87:510.28:080.56:027:25Full Moon14Sun
15Mon1:487.32:116.88:340.28:490.66:007:26Full Moon15Mon
16Tue2:287.42:526.89:170.29:310.75:597:28Waning Gibbous16Tue
17Wed3:097.53:356.710:000.310:130.95:577:29Waning Gibbous17Wed
18Thu3:517.54:196.610:450.410:581.05:557:30Waning Gibbous18Thu
19Fri4:377.45:076.511:330.511:461.15:547:31Waning Gibbous19Fri
20Sat5:257.35:576.512:220.65:527:32Third Quarter20Sat
21Sun6:167.26:486.512:371.21:140.65:517:33Third Quarter21Sun
22Mon7:087.27:416.51:301.22:060.65:497:34Third Quarter22Mon
23Tue8:037.28:366.72:261.13:000.65:487:36Third Quarter23Tue
24Wed8:597.29:317.03:220.93:530.45:467:37Waning Crescent24Wed
25Thu9:557.310:257.44:170.64:440.25:457:38Waning Crescent25Thu
26Fri10:497.511:167.85:090.25:330.05:437:39Waning Crescent26Fri
27Sat11:427.66:01-0.26:22-0.25:427:40New Moon27Sat
28Sun12:078.212:357.76:53-0.67:11-0.35:407:41New Moon28Sun
29Mon12:578.61:277.87:44-0.98:01-0.45:397:42New Moon29Mon
30Tue1:488.82:187.88:35-1.08:50-0.45:387:44New Moon30Tue
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 10:56 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 100% 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 (100% 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