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 3h 01m at 4:26 pm (0.6 ft)
Next high tide : 10:20 pm (8.1 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 - Oct 1953

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu6:436.07:067.11:020.51:181.15:415:26Third Quarter1Thu
2Fri7:426.08:056.91:590.72:161.15:425:24Waning Crescent2Fri
3Sat8:406.09:016.82:530.73:111.05:435:22Waning Crescent3Sat
4Sun9:326.29:516.73:440.74:020.95:445:20Waning Crescent4Sun
5Mon10:176.510:366.74:300.74:500.75:455:19Waning Crescent5Mon
6Tue10:586.711:196.75:140.75:360.65:465:17New Moon6Tue
7Wed11:386.95:570.76:200.55:475:15New Moon7Wed
8Thu12:006.712:177.16:370.87:030.45:495:14New Moon8Thu
9Fri12:406.712:567.37:170.87:450.45:505:12New Moon9Fri
10Sat1:216.71:367.47:561.08:260.45:515:10Waxing Crescent10Sat
11Sun2:026.62:177.58:341.19:090.55:525:08Waxing Crescent11Sun
12Mon2:466.53:017.59:151.29:560.65:535:07Waxing Crescent12Mon
13Tue3:326.43:497.510:001.310:470.65:545:05Waxing Crescent13Tue
14Wed4:236.34:427.410:521.411:410.75:565:03First Quarter14Wed
15Thu5:176.35:377.411:491.45:575:02First Quarter15Thu
16Fri6:136.36:347.412:360.612:491.35:585:00First Quarter16Fri
17Sat7:116.57:347.51:330.51:501.05:594:59Waxing Gibbous17Sat
18Sun8:106.88:347.52:290.32:500.66:004:57Waxing Gibbous18Sun
19Mon9:077.29:317.63:220.13:460.26:014:55Waxing Gibbous19Mon
20Tue10:007.710:267.74:13-0.14:40-0.26:034:54Waxing Gibbous20Tue
21Wed10:518.211:197.65:02-0.25:33-0.66:044:52Full Moon21Wed
22Thu11:418.55:51-0.36:26-0.86:054:51Full Moon22Thu
23Fri12:117.512:308.76:40-0.27:17-0.96:064:49Full Moon23Fri
24Sat1:017.41:198.77:28-0.18:07-0.86:084:48Waning Gibbous24Sat
25Sun1:507.12:078.68:170.18:58-0.66:094:46Waning Gibbous25Sun
26Mon2:406.92:578.39:070.39:50-0.36:104:45Waning Gibbous26Mon
27Tue3:316.63:497.910:010.610:430.06:114:43Third Quarter27Tue
28Wed4:246.44:437.510:560.911:370.36:134:42Third Quarter28Wed
29Thu5:186.25:377.211:521.06:144:41Third Quarter29Thu
30Fri6:136.16:336.912:310.512:491.16:154:39Third Quarter30Fri
31Sat7:086.17:296.61:250.71:461.26:164:38Waning Crescent31Sat
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 7:23 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 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