Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Sunday, August 16, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 4h 45m at 10:32 pm (0.1 ft)
Next high tide (tomorrow) : 4:15 am (7.2 ft)
Sunset today : 7:44 pm
Sunrise tomorrow : 5:51 am
Moon phase : Waxing Crescent (18% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Aug 1942

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:227.84:517.411:07-0.311:310.25:348:05Waning Gibbous1Sat
2Sun5:127.45:417.311:570.05:358:04Third Quarter2Sun
3Mon6:027.06:317.212:240.412:470.35:368:03Third Quarter3Mon
4Tue6:536.77:227.11:170.51:380.55:378:02Third Quarter4Tue
5Wed7:466.48:147.02:110.72:300.75:388:00Third Quarter5Wed
6Thu8:406.29:077.03:060.73:230.95:397:59Waning Crescent6Thu
7Fri9:346.09:597.04:000.74:140.95:407:58Waning Crescent7Fri
8Sat10:266.010:497.14:510.75:040.95:427:57Waning Crescent8Sat
9Sun11:156.111:357.25:400.65:520.95:437:55Waning Crescent9Sun
10Mon12:016.26:270.56:380.85:447:54New Moon10Mon
11Tue12:207.412:466.47:120.47:230.75:457:52New Moon11Tue
12Wed1:047.51:296.67:560.38:070.65:467:51New Moon12Wed
13Thu1:477.62:126.88:380.28:500.65:477:50New Moon13Thu
14Fri2:307.72:557.19:200.19:330.55:487:48Waxing Crescent14Fri
15Sat3:147.73:407.310:020.110:190.45:497:47Waxing Crescent15Sat
16Sun4:007.74:277.510:460.211:080.45:507:45Waxing Crescent16Sun
17Mon4:497.65:177.611:330.25:517:44Waxing Crescent17Mon
18Tue5:417.46:097.712:020.312:240.35:527:42First Quarter18Tue
19Wed6:367.27:047.812:580.31:170.45:537:41First Quarter19Wed
20Thu7:327.08:017.91:560.22:140.45:557:39First Quarter20Thu
21Fri8:326.89:008.02:560.13:130.45:567:38Waxing Gibbous21Fri
22Sat9:336.810:008.13:55-0.14:110.25:577:36Waxing Gibbous22Sat
23Sun10:326.910:578.24:52-0.35:070.15:587:34Waxing Gibbous23Sun
24Mon11:287.011:528.35:46-0.56:01-0.15:597:33Full Moon24Mon
25Tue12:227.26:38-0.66:54-0.26:007:31Full Moon25Tue
26Wed12:448.31:137.37:29-0.67:46-0.36:017:30Full Moon26Wed
27Thu1:348.22:017.58:17-0.68:35-0.36:027:28Full Moon27Thu
28Fri2:228.12:477.59:04-0.59:24-0.26:037:26Waning Gibbous28Fri
29Sat3:087.83:327.59:50-0.310:12-0.16:047:25Waning Gibbous29Sat
30Sun3:547.54:187.510:360.011:020.16:057:23Waning Gibbous30Sun
31Mon4:417.25:057.411:240.311:530.46:067:21Third Quarter31Mon
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 1:23 am — 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 18% 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 Crescent (18% 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