Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 1h 52m at 9:13 pm (0.0 ft)
Next high tide (tomorrow) : 3:05 am (8.4 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:20 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Oct 2075

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:026.36:227.112:260.612:421.26:416:25Third Quarter1Tue
2Wed6:536.17:146.91:190.71:351.36:426:23Third Quarter2Wed
3Thu7:476.08:086.82:130.92:301.46:436:21Third Quarter3Thu
4Fri8:426.09:046.83:080.93:251.36:446:20Waning Crescent4Fri
5Sat9:376.19:586.94:010.84:181.16:466:18Waning Crescent5Sat
6Sun10:286.310:487.04:500.75:080.96:476:16Waning Crescent6Sun
7Mon11:156.611:367.25:370.55:550.76:486:14Waning Crescent7Mon
8Tue12:006.96:220.46:410.56:496:13New Moon8Tue
9Wed12:217.312:447.37:060.37:270.26:506:11New Moon9Wed
10Thu1:077.51:287.67:480.28:120.06:516:09New Moon10Thu
11Fri1:527.52:127.98:300.28:57-0.26:526:08New Moon11Fri
12Sat2:387.52:578.29:120.29:44-0.36:546:06Waxing Crescent12Sat
13Sun3:257.43:458.39:570.310:34-0.36:556:04Waxing Crescent13Sun
14Mon4:157.34:368.310:470.411:29-0.26:566:03Waxing Crescent14Mon
15Tue5:097.15:308.211:420.66:576:01First Quarter15Tue
16Wed6:066.96:288.012:26-0.212:410.76:585:59First Quarter16Wed
17Thu7:056.77:277.91:25-0.11:420.77:005:58First Quarter17Thu
18Fri8:066.78:297.72:240.02:430.67:015:56Waxing Gibbous18Fri
19Sat9:086.79:317.63:23-0.13:440.57:025:55Waxing Gibbous19Sat
20Sun10:076.910:307.54:19-0.14:410.27:035:53Waxing Gibbous20Sun
21Mon11:027.211:247.55:11-0.15:350.17:045:52Waxing Gibbous21Mon
22Tue11:517.46:01-0.16:26-0.17:065:50Full Moon22Tue
23Wed12:147.312:377.66:48-0.17:15-0.27:075:49Full Moon23Wed
24Thu1:017.21:207.77:340.18:02-0.27:085:47Full Moon24Thu
25Fri1:457.12:027.78:180.38:47-0.17:095:46Full Moon25Fri
26Sat2:286.92:437.79:010.59:320.07:115:44Waning Gibbous26Sat
27Sun3:106.73:257.69:440.710:170.27:125:43Waning Gibbous27Sun
28Mon3:546.64:097.510:290.911:050.47:135:41Waning Gibbous28Mon
29Tue4:406.44:567.311:171.211:550.57:145:40Waning Gibbous29Tue
30Wed5:296.25:467.112:081.37:155:39Third Quarter30Wed
31Thu6:216.16:387.012:460.71:011.47:175:37Third Quarter31Thu
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 12:09 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 7% 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 (7% 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