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 6h 14m 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 - Mar 2009

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:097.63:357.09:530.110:070.46:185:33Waxing Crescent1Sun
2Mon3:587.74:276.810:460.110:580.56:175:34First Quarter2Mon
3Tue4:507.75:226.511:430.111:540.66:155:35First Quarter3Tue
4Wed5:467.76:196.312:430.16:135:37First Quarter4Wed
5Thu6:457.67:206.212:550.71:440.16:125:38First Quarter5Thu
6Fri7:477.68:246.21:570.62:450.06:105:39Waxing Gibbous6Fri
7Sat8:507.79:256.42:590.53:43-0.26:085:40Waxing Gibbous7Sat
8Sun10:497.711:226.74:570.25:36-0.37:076:42Waxing Gibbous8Sun
9Mon11:457.85:520.06:28-0.47:056:43Full Moon9Mon
10Tue12:147.012:377.76:45-0.37:16-0.57:036:44Full Moon10Tue
11Wed1:047.31:267.67:37-0.48:02-0.47:026:45Full Moon11Wed
12Thu1:507.52:127.48:25-0.48:47-0.37:006:46Full Moon12Thu
13Fri2:337.62:567.29:12-0.49:30-0.16:586:48Waning Gibbous13Fri
14Sat3:167.63:406.99:59-0.210:140.26:566:49Waning Gibbous14Sat
15Sun3:597.54:256.610:460.011:010.56:556:50Waning Gibbous15Sun
16Mon4:457.45:126.311:360.311:490.86:536:51Waning Gibbous16Mon
17Tue5:337.26:026.012:270.56:516:52Third Quarter17Tue
18Wed6:237.06:535.812:401.01:200.76:496:53Third Quarter18Wed
19Thu7:166.87:465.71:331.22:150.96:486:55Third Quarter19Thu
20Fri8:116.78:425.62:291.33:110.96:466:56Third Quarter20Fri
21Sat9:076.69:385.73:251.34:040.96:446:57Waning Crescent21Sat
22Sun10:026.710:315.94:191.14:540.86:426:58Waning Crescent22Sun
23Mon10:526.811:186.35:090.95:410.66:416:59Waning Crescent23Mon
24Tue11:406.95:570.76:250.56:397:00Waning Crescent24Tue
25Wed12:036.612:257.06:440.57:080.46:377:02New Moon25Wed
26Thu12:477.01:107.17:290.27:500.36:357:03New Moon26Thu
27Fri1:307.41:547.28:130.08:300.36:347:04New Moon27Fri
28Sat2:137.72:397.28:58-0.29:110.36:327:05Waxing Crescent28Sat
29Sun2:578.03:267.19:44-0.29:550.46:307:06Waxing Crescent29Sun
30Mon3:448.14:157.010:34-0.310:430.56:287:07Waxing Crescent30Mon
31Tue4:358.15:086.811:28-0.211:380.66:277:09Waxing Crescent31Tue
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