Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently rising in Merrimacport, MA.
Next low tide : 8:21 pm (0.1 ft)
Next high tide : in 1h 13m at 1:56 pm (6.8 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:19 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Nov 2073

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed1:557.82:158.88:27-0.59:02-1.17:195:35Waxing Crescent1Wed
2Thu2:457.63:058.89:17-0.39:53-1.07:205:34Waxing Crescent2Thu
3Fri3:367.43:558.510:08-0.110:46-0.77:215:33Waxing Crescent3Fri
4Sat4:287.14:478.211:010.211:40-0.47:225:32Waxing Crescent4Sat
5Sun4:226.84:417.810:560.511:34-0.16:244:30First Quarter5Sun
6Mon5:176.65:367.411:530.76:254:29First Quarter6Mon
7Tue6:126.56:327.112:290.112:490.86:264:28First Quarter7Tue
8Wed7:086.47:286.81:230.31:460.96:274:27Waxing Gibbous8Wed
9Thu8:046.58:246.72:170.42:420.86:294:26Waxing Gibbous9Thu
10Fri8:566.69:166.63:080.53:340.76:304:25Waxing Gibbous10Fri
11Sat9:446.810:046.63:560.54:230.66:314:24Waxing Gibbous11Sat
12Sun10:277.010:496.54:420.55:100.46:334:23Waxing Gibbous12Sun
13Mon11:097.211:326.55:270.65:550.36:344:22Full Moon13Mon
14Tue11:507.36:100.66:400.36:354:21Full Moon14Tue
15Wed12:156.612:317.56:520.77:230.26:364:20Full Moon15Wed
16Thu12:576.61:127.67:330.88:050.26:384:19Full Moon16Thu
17Fri1:396.61:547.68:140.98:480.26:394:18Waning Gibbous17Fri
18Sat2:226.62:377.78:561.09:330.26:404:17Waning Gibbous18Sat
19Sun3:086.63:247.69:411.110:210.36:414:17Waning Gibbous19Sun
20Mon3:586.64:157.610:311.111:120.26:424:16Waning Gibbous20Mon
21Tue4:506.65:087.511:261.16:444:15Third Quarter21Tue
22Wed5:446.76:037.512:050.212:230.96:454:15Third Quarter22Wed
23Thu6:406.97:017.412:590.11:220.76:464:14Third Quarter23Thu
24Fri7:377.28:007.41:540.02:210.46:474:13Waning Crescent24Fri
25Sat8:347.68:597.42:49-0.13:190.06:484:13Waning Crescent25Sat
26Sun9:297.99:557.43:41-0.24:14-0.46:504:12Waning Crescent26Sun
27Mon10:218.310:507.44:33-0.45:07-0.76:514:12New Moon27Mon
28Tue11:138.611:437.45:24-0.46:00-0.96:524:11New Moon28Tue
29Wed12:048.76:14-0.46:52-1.16:534:11New Moon29Wed
30Thu12:357.312:548.77:05-0.37:43-1.06:544:11New Moon30Thu
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 5:08 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 2% 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 New Moon (2% 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