Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Thursday, June 4, 2026
The tide is currently rising in Merrimacport, MA.
Next low tide (tomorrow) : 11:21 am (0.6 ft)
Next high tide (tomorrow) : in 4h 59m at 4:23 am (7.4 ft)
Sunset today : 8:18 pm
Sunrise tomorrow : 5:06 am
Moon phase : Waning Gibbous (84% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Oct 2028

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:316.511:516.85:460.76:060.76:426:24Full Moon1Sun
2Mon12:126.76:300.76:510.66:436:22Full Moon2Mon
3Tue12:336.812:517.07:120.77:350.56:446:21Full Moon3Tue
4Wed1:146.81:317.27:520.88:170.46:456:19Full Moon4Wed
5Thu1:546.82:107.48:310.88:590.46:466:17Full Moon5Thu
6Fri2:356.72:517.59:100.99:410.46:476:16Waning Gibbous6Fri
7Sat3:176.73:337.59:491.110:250.56:486:14Waning Gibbous7Sat
8Sun4:026.64:187.510:311.211:140.66:496:12Waning Gibbous8Sun
9Mon4:506.45:087.511:191.36:516:10Third Quarter9Mon
10Tue5:436.36:027.512:060.612:131.36:526:09Third Quarter10Tue
11Wed6:386.36:587.51:010.61:121.36:536:07Third Quarter11Wed
12Thu7:356.47:577.51:580.52:121.16:546:05Third Quarter12Thu
13Fri8:346.68:577.52:550.43:130.86:556:04Waning Crescent13Fri
14Sat9:327.09:577.63:510.24:120.46:566:02Waning Crescent14Sat
15Sun10:287.410:537.74:430.05:070.06:586:00Waning Crescent15Sun
16Mon11:217.911:477.75:33-0.26:01-0.46:595:59New Moon16Mon
17Tue12:118.36:23-0.36:54-0.77:005:57New Moon17Tue
18Wed12:407.71:018.57:12-0.37:46-0.97:015:56New Moon18Wed
19Thu1:317.51:508.78:00-0.28:36-0.97:025:54New Moon19Thu
20Fri2:207.32:388.68:48-0.19:26-0.77:045:53Waxing Crescent20Fri
21Sat3:097.13:268.49:370.210:17-0.57:055:51Waxing Crescent21Sat
22Sun3:586.84:168.110:280.411:10-0.17:065:50Waxing Crescent22Sun
23Mon4:496.55:087.711:210.77:075:48First Quarter23Mon
24Tue5:436.36:027.412:030.212:161.07:095:47First Quarter24Tue
25Wed6:376.16:567.012:570.41:131.17:105:45First Quarter25Wed
26Thu7:316.17:526.81:510.62:091.27:115:44First Quarter26Thu
27Fri8:276.18:486.62:440.73:061.17:125:42Waxing Gibbous27Fri
28Sat9:216.39:426.53:360.84:001.07:145:41Waxing Gibbous28Sat
29Sun10:116.510:326.54:250.84:500.87:155:39Waxing Gibbous29Sun
30Mon10:566.811:196.45:110.85:380.77:165:38Waxing Gibbous30Mon
31Tue11:397.05:550.86:240.57:175:37Full Moon31Tue
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 7:52 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 84% 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 Gibbous (84% 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