Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Sunday, August 9, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 1h 04m at 4:17 am (0.1 ft)
Next high tide : 9:55 am (6.3 ft)
Sunset today : 7:54 pm
Sunrise tomorrow : 5:44 am
Moon phase : Waning Crescent (13% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Aug 1954

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:277.72:536.89:120.09:270.45:348:05Waxing Crescent1Sun
2Mon3:117.53:366.99:560.110:130.55:358:04Waxing Crescent2Mon
3Tue3:547.34:207.010:390.311:010.65:368:03Waxing Crescent3Tue
4Wed4:397.05:057.011:240.611:510.85:378:02Waxing Crescent4Wed
5Thu5:276.75:537.012:110.85:398:00First Quarter5Thu
6Fri6:166.46:417.012:420.912:591.05:407:59First Quarter6Fri
7Sat7:066.27:326.91:351.01:501.25:417:58First Quarter7Sat
8Sun7:595.98:256.92:301.02:431.35:427:56First Quarter8Sun
9Mon8:545.89:197.03:251.03:361.35:437:55Waxing Gibbous9Mon
10Tue9:495.810:137.24:180.94:281.25:447:54Waxing Gibbous10Tue
11Wed10:416.011:037.45:090.75:171.05:457:52Waxing Gibbous11Wed
12Thu11:316.211:517.65:570.56:050.85:467:51Waxing Gibbous12Thu
13Fri12:196.56:440.36:530.65:477:49Full Moon13Fri
14Sat12:397.81:066.87:300.17:400.45:487:48Full Moon14Sat
15Sun1:268.01:537.28:14-0.18:270.15:497:47Full Moon15Sun
16Mon2:138.12:397.68:57-0.29:15-0.15:507:45Waning Gibbous16Mon
17Tue3:008.13:267.99:42-0.310:05-0.25:517:44Waning Gibbous17Tue
18Wed3:497.94:158.110:28-0.210:58-0.25:527:42Waning Gibbous18Wed
19Thu4:417.65:088.111:180.011:55-0.15:547:41Third Quarter19Thu
20Fri5:357.26:028.112:120.25:557:39Third Quarter20Fri
21Sat6:326.96:598.012:530.01:080.45:567:37Third Quarter21Sat
22Sun7:306.57:587.91:520.12:070.55:577:36Third Quarter22Sun
23Mon8:316.38:597.72:530.23:070.65:587:34Waning Crescent23Mon
24Tue9:346.210:007.63:530.24:060.65:597:33Waning Crescent24Tue
25Wed10:336.210:577.64:490.25:010.56:007:31Waning Crescent25Wed
26Thu11:276.411:487.65:410.15:540.46:017:29New Moon26Thu
27Fri12:166.56:310.16:440.46:027:28New Moon27Fri
28Sat12:367.51:016.77:170.17:320.36:037:26New Moon28Sat
29Sun1:207.41:436.98:010.28:180.36:047:24New Moon29Sun
30Mon2:027.32:237.08:430.39:020.36:057:23Waxing Crescent30Mon
31Tue2:437.23:037.19:240.49:460.46:077:21Waxing 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 7:06 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 13% 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 Crescent (13% 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