Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in Merrimacport, MA.
Next low tide (tomorrow) : 3:09 am (0.8 ft)
Next high tide : in 5h 16m at 8:25 pm (7.0 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:06 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Apr 2043

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed5:467.06:186.012:011.412:440.86:257:09Third Quarter1Wed
2Thu6:387.07:115.812:531.51:380.96:237:11Third Quarter2Thu
3Fri7:326.98:075.81:481.52:350.96:227:12Third Quarter3Fri
4Sat8:297.09:046.02:461.53:300.86:207:13Third Quarter4Sat
5Sun9:267.110:006.33:431.24:230.66:187:14Waning Crescent5Sun
6Mon10:227.310:536.74:380.95:130.36:177:15Waning Crescent6Mon
7Tue11:157.511:437.25:290.56:000.16:157:16Waning Crescent7Tue
8Wed12:067.66:210.16:47-0.16:137:17New Moon8Wed
9Thu12:317.712:577.77:11-0.37:33-0.26:117:19New Moon9Thu
10Fri1:208.11:487.78:02-0.68:19-0.26:107:20New Moon10Fri
11Sat2:088.52:377.58:52-0.89:06-0.16:087:21Waxing Crescent11Sat
12Sun2:568.63:287.39:43-0.89:550.06:067:22Waxing Crescent12Sun
13Mon3:468.64:207.010:37-0.710:480.36:057:23Waxing Crescent13Mon
14Tue4:398.45:156.711:33-0.411:440.56:037:24First Quarter14Tue
15Wed5:358.16:126.412:30-0.16:017:25First Quarter15Wed
16Thu6:337.77:106.212:430.71:280.16:007:27First Quarter16Thu
17Fri7:327.48:116.11:430.92:260.35:587:28First Quarter17Fri
18Sat8:337.19:136.12:441.03:240.55:577:29Waxing Gibbous18Sat
19Sun9:356.910:106.33:430.94:170.55:557:30Waxing Gibbous19Sun
20Mon10:306.711:006.54:380.85:070.55:537:31Waxing Gibbous20Mon
21Tue11:196.711:436.75:290.75:520.65:527:32Waxing Gibbous21Tue
22Wed12:046.66:170.66:360.65:507:34Full Moon22Wed
23Thu12:236.912:466.57:030.57:180.75:497:35Full Moon23Thu
24Fri1:027.11:266.57:470.47:590.85:477:36Full Moon24Fri
25Sat1:417.32:066.58:290.48:391.05:467:37Full Moon25Sat
26Sun2:207.42:476.49:100.49:181.15:447:38Waning Gibbous26Sun
27Mon2:597.43:286.39:530.49:581.35:437:39Waning Gibbous27Mon
28Tue3:417.44:136.210:370.610:411.45:417:40Waning Gibbous28Tue
29Wed4:277.45:006.111:250.711:291.55:407:42Waning Gibbous29Wed
30Thu5:167.35:516.112:150.85:397:43Third Quarter30Thu
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 11:47 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 transitional phase. Tonight's moon is 67% 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 shifting between spring and neap.

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 First Quarter (67% illuminated). This places Merrimacport, MA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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