Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Monday, June 29, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 1h 52m at 7:21 pm (1.2 ft)
Next high tide (tomorrow) : 1:06 am (7.4 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 2051

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:267.44:556.611:190.411:321.06:257:09Waning Gibbous1Sat
2Sun5:147.45:446.512:090.56:237:11Third Quarter2Sun
3Mon6:057.46:376.512:221.01:010.56:227:12Third Quarter3Mon
4Tue6:587.47:316.51:161.11:560.56:207:13Third Quarter4Tue
5Wed7:547.48:286.62:131.02:520.46:187:14Third Quarter5Wed
6Thu8:527.59:266.93:110.83:480.26:167:15Waning Crescent6Thu
7Fri9:507.610:227.24:080.44:410.06:157:16Waning Crescent7Fri
8Sat10:477.811:157.75:030.05:32-0.36:137:17Waning Crescent8Sat
9Sun11:417.95:57-0.46:22-0.56:117:19New Moon9Sun
10Mon12:078.112:348.06:50-0.77:12-0.66:107:20New Moon10Mon
11Tue12:588.41:278.07:42-1.08:02-0.66:087:21New Moon11Tue
12Wed1:498.72:187.98:33-1.18:51-0.66:067:22New Moon12Wed
13Thu2:388.73:087.79:24-1.19:40-0.46:057:23Waxing Crescent13Thu
14Fri3:288.63:587.410:16-0.910:32-0.16:037:24Waxing Crescent14Fri
15Sat4:198.44:517.111:09-0.611:250.16:017:26Waxing Crescent15Sat
16Sun5:128.15:446.812:03-0.36:007:27First Quarter16Sun
17Mon6:067.76:396.612:210.412:580.05:587:28First Quarter17Mon
18Tue7:007.37:346.41:160.61:520.25:577:29First Quarter18Tue
19Wed7:567.08:306.42:130.82:470.45:557:30First Quarter19Wed
20Thu8:536.89:266.43:100.83:400.55:537:31Waxing Gibbous20Thu
21Fri9:486.710:176.64:040.84:310.65:527:32Waxing Gibbous21Fri
22Sat10:396.611:046.74:550.75:180.65:507:34Waxing Gibbous22Sat
23Sun11:256.611:476.95:440.66:040.65:497:35Waxing Gibbous23Sun
24Mon12:096.66:300.56:480.65:477:36Full Moon24Mon
25Tue12:297.112:526.67:160.47:310.75:467:37Full Moon25Tue
26Wed1:107.31:346.77:590.38:130.75:447:38Full Moon26Wed
27Thu1:517.52:166.78:420.28:530.85:437:39Full Moon27Thu
28Fri2:327.62:596.79:240.29:340.95:417:40Waning Gibbous28Fri
29Sat3:147.73:436.710:080.310:171.05:407:42Waning Gibbous29Sat
30Sun3:597.74:296.710:540.311:031.05:397:43Waning Gibbous30Sun
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 10:13 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