Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Monday, August 10, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 1h 02m at 5:23 pm (0.4 ft)
Next high tide : 11:18 pm (8.2 ft)
Sunset today : 7:53 pm
Sunrise tomorrow : 5:45 am
Moon phase : Waning Crescent (6% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Aug 1951

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:105.86:350.76:401.15:348:05New Moon1Wed
2Thu12:277.312:545.97:200.67:251.05:358:04New Moon2Thu
3Fri1:107.41:376.28:030.58:091.05:368:03New Moon3Fri
4Sat1:537.52:196.48:440.48:510.95:378:02New Moon4Sat
5Sun2:347.53:006.79:240.49:330.85:388:01Waxing Crescent5Sun
6Mon3:167.53:436.910:030.410:170.75:397:59Waxing Crescent6Mon
7Tue4:017.44:287.110:450.411:050.75:407:58Waxing Crescent7Tue
8Wed4:487.25:167.311:280.511:580.65:417:57Waxing Crescent8Wed
9Thu5:397.06:067.512:160.65:427:55First Quarter9Thu
10Fri6:336.86:597.612:540.61:070.85:447:54First Quarter10Fri
11Sat7:296.57:567.71:520.52:040.95:457:53First Quarter11Sat
12Sun8:296.38:557.92:540.43:040.85:467:51Waxing Gibbous12Sun
13Mon9:316.29:568.03:550.24:040.75:477:50Waxing Gibbous13Mon
14Tue10:326.310:558.24:530.05:010.55:487:48Waxing Gibbous14Tue
15Wed11:296.511:528.35:48-0.25:570.35:497:47Full Moon15Wed
16Thu12:246.76:41-0.36:510.15:507:46Full Moon16Thu
17Fri12:468.31:167.07:32-0.47:44-0.15:517:44Full Moon17Fri
18Sat1:378.32:057.28:20-0.58:35-0.15:527:42Full Moon18Sat
19Sun2:268.12:527.49:06-0.49:25-0.15:537:41Waning Gibbous19Sun
20Mon3:127.83:377.59:52-0.210:140.05:547:39Waning Gibbous20Mon
21Tue3:597.44:237.510:370.111:050.25:557:38Waning Gibbous21Tue
22Wed4:467.05:117.411:250.411:570.45:577:36Third Quarter22Wed
23Thu5:356.65:597.212:130.75:587:35Third Quarter23Thu
24Fri6:266.26:497.112:490.61:041.05:597:33Third Quarter24Fri
25Sat7:175.97:416.91:430.81:561.26:007:31Third Quarter25Sat
26Sun8:115.78:366.82:391.02:511.36:017:30Waning Crescent26Sun
27Mon9:085.69:326.83:341.03:461.46:027:28Waning Crescent27Mon
28Tue10:035.610:256.94:281.04:381.36:037:27Waning Crescent28Tue
29Wed10:545.811:147.05:180.95:271.16:047:25Waning Crescent29Wed
30Thu11:416.06:050.76:141.06:057:23New Moon30Thu
31Fri12:007.212:256.26:500.67:000.86:067:21New Moon31Fri
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 8:20 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 6% 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 (6% 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