Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Friday, July 10, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 1h 22m at 3:49 pm (0.7 ft)
Next high tide : 9:41 pm (8.0 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:15 am
Moon phase : Waning Crescent (20% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - May 2068

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue12:198.412:487.47:04-0.77:19-0.25:367:45New Moon1Tue
2Wed1:098.51:387.37:55-0.88:08-0.15:357:46New Moon2Wed
3Thu1:578.52:277.18:45-0.78:560.15:337:47Waxing Crescent3Thu
4Fri2:448.43:146.99:33-0.59:450.35:327:48Waxing Crescent4Fri
5Sat3:318.24:016.810:22-0.310:340.55:317:49Waxing Crescent5Sat
6Sun4:197.94:516.611:120.011:260.85:307:51Waxing Crescent6Sun
7Mon5:087.65:416.512:030.25:287:52First Quarter7Mon
8Tue6:007.36:336.412:191.012:540.55:277:53First Quarter8Tue
9Wed6:517.07:246.41:131.11:450.65:267:54First Quarter9Wed
10Thu7:446.88:176.52:071.12:370.75:257:55First Quarter10Thu
11Fri8:386.69:096.63:021.13:280.85:247:56Waxing Gibbous11Fri
12Sat9:326.510:006.83:561.04:180.85:237:57Waxing Gibbous12Sat
13Sun10:236.410:477.04:470.85:050.85:227:58Waxing Gibbous13Sun
14Mon11:116.411:327.35:350.65:500.85:217:59Waxing Gibbous14Mon
15Tue11:576.56:220.56:340.85:208:00Full Moon15Tue
16Wed12:157.512:426.67:080.37:180.85:198:01Full Moon16Wed
17Thu12:597.71:276.67:530.28:010.85:188:02Full Moon17Thu
18Fri1:437.92:126.78:370.18:440.85:178:03Full Moon18Fri
19Sat2:288.12:586.89:220.09:280.75:168:04Waning Gibbous19Sat
20Sun3:148.23:466.910:08-0.110:160.75:158:05Waning Gibbous20Sun
21Mon4:038.24:377.010:57-0.111:090.75:148:06Waning Gibbous21Mon
22Tue4:558.15:307.111:49-0.15:138:07Third Quarter22Tue
23Wed5:508.06:257.212:050.712:43-0.15:138:08Third Quarter23Wed
24Thu6:467.87:217.41:040.61:37-0.15:128:09Third Quarter24Thu
25Fri7:447.68:187.62:030.42:32-0.15:118:10Third Quarter25Fri
26Sat8:437.49:167.83:040.23:280.05:108:11Waning Crescent26Sat
27Sun9:437.210:128.04:020.04:220.05:108:12Waning Crescent27Sun
28Mon10:407.011:068.24:58-0.25:140.05:098:13Waning Crescent28Mon
29Tue11:356.911:578.35:52-0.36:050.15:098:14New Moon29Tue
30Wed12:276.86:45-0.46:560.25:088:14New Moon30Wed
31Thu12:468.31:176.87:35-0.47:450.35:088:15New Moon31Thu
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 6:45 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 20% 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 (20% 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