Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Thursday, June 25, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 52m at 4:15 pm (0.9 ft)
Next high tide : 10:07 pm (7.1 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:06 am
Moon phase : Waxing Gibbous (84% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Apr 2046

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:296.610:015.93:411.14:170.86:257:10Waning Crescent1Sun
2Mon10:236.610:516.14:351.05:060.76:237:11Waning Crescent2Mon
3Tue11:116.611:356.45:240.85:510.76:217:12Waning Crescent3Tue
4Wed11:566.66:120.76:350.76:197:13New Moon4Wed
5Thu12:166.612:386.66:570.57:170.76:187:14New Moon5Thu
6Fri12:566.91:196.77:410.47:570.76:167:15New Moon6Fri
7Sat1:367.12:006.78:230.38:360.86:147:17New Moon7Sat
8Sun2:167.32:426.79:050.39:140.96:137:18Waxing Crescent8Sun
9Mon2:567.53:246.69:470.39:541.06:117:19Waxing Crescent9Mon
10Tue3:397.64:096.510:310.310:361.16:097:20Waxing Crescent10Tue
11Wed4:257.64:586.411:200.411:251.16:087:21Waxing Crescent11Wed
12Thu5:167.65:516.412:130.46:067:22First Quarter12Thu
13Fri6:107.66:466.312:201.21:080.46:047:23First Quarter13Fri
14Sat7:077.67:446.41:191.12:060.46:037:25First Quarter14Sat
15Sun8:067.58:436.62:201.03:030.26:017:26First Quarter15Sun
16Mon9:077.59:427.03:220.73:590.15:597:27Waxing Gibbous16Mon
17Tue10:077.610:387.44:210.34:52-0.15:587:28Waxing Gibbous17Tue
18Wed11:037.611:307.85:17-0.15:42-0.25:567:29Waxing Gibbous18Wed
19Thu11:577.66:11-0.46:32-0.25:557:30Full Moon19Thu
20Fri12:218.212:507.57:04-0.77:21-0.25:537:32Full Moon20Fri
21Sat1:118.41:417.37:56-0.88:09-0.15:517:33Full Moon21Sat
22Sun1:598.52:297.18:46-0.88:570.15:507:34Waning Gibbous22Sun
23Mon2:468.53:176.99:35-0.69:450.35:487:35Waning Gibbous23Mon
24Tue3:348.34:066.610:25-0.310:350.65:477:36Waning Gibbous24Tue
25Wed4:237.94:566.411:170.011:280.85:457:37Waning Gibbous25Wed
26Thu5:147.65:486.212:090.35:447:38Third Quarter26Thu
27Fri6:077.36:416.112:221.01:020.55:437:40Third Quarter27Fri
28Sat7:017.07:356.01:181.21:550.75:417:41Third Quarter28Sat
29Sun7:556.78:306.12:141.32:490.85:407:42Third Quarter29Sun
30Mon8:516.59:246.33:101.23:400.95:387:43Waning Crescent30Mon
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 7:11 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 84% 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 Gibbous (84% 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