Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Saturday, July 11, 2026
The tide is currently rising in Merrimacport, MA.
Next low tide : 4:45 pm (0.6 ft)
Next high tide : in 4h 26m at 10:14 am (6.5 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:16 am
Moon phase : Waning Crescent (11% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - May 2069

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed9:316.610:016.73:480.84:130.65:367:45Waxing Gibbous1Wed
2Thu10:236.510:486.94:400.75:010.65:357:46Waxing Gibbous2Thu
3Fri11:106.511:327.05:290.65:470.75:347:47Waxing Gibbous3Fri
4Sat11:556.56:160.56:320.75:327:48Full Moon4Sat
5Sun12:147.212:386.57:020.47:150.85:317:49Full Moon5Sun
6Mon12:557.41:216.57:460.37:580.85:307:50Full Moon6Mon
7Tue1:367.52:036.68:290.38:390.95:297:51Full Moon7Tue
8Wed2:187.62:456.69:110.39:201.05:277:52Waning Gibbous8Wed
9Thu3:007.73:296.79:540.310:021.05:267:54Waning Gibbous9Thu
10Fri3:447.74:146.710:390.310:481.15:257:55Waning Gibbous10Fri
11Sat4:317.75:046.711:270.311:381.15:247:56Waning Gibbous11Sat
12Sun5:217.75:556.812:170.35:237:57Third Quarter12Sun
13Mon6:147.66:486.912:321.11:090.35:227:58Third Quarter13Mon
14Tue7:087.57:437.11:281.02:020.35:217:59Third Quarter14Tue
15Wed8:057.58:397.42:270.82:570.25:208:00Third Quarter15Wed
16Thu9:047.49:367.73:260.43:510.15:198:01Waning Crescent16Thu
17Fri10:027.410:318.14:230.14:440.05:188:02Waning Crescent17Fri
18Sat10:597.411:248.45:18-0.35:35-0.15:178:03Waning Crescent18Sat
19Sun11:537.46:12-0.66:27-0.25:168:04New Moon19Sun
20Mon12:168.712:477.47:05-0.87:18-0.25:158:05New Moon20Mon
21Tue1:088.81:397.47:57-0.98:09-0.25:148:06New Moon21Tue
22Wed1:598.82:307.38:48-0.99:00-0.15:138:07Waxing Crescent22Wed
23Thu2:488.73:207.29:38-0.89:510.15:138:08Waxing Crescent23Thu
24Fri3:388.54:117.010:29-0.510:430.35:128:09Waxing Crescent24Fri
25Sat4:298.15:026.911:20-0.311:370.55:118:10Waxing Crescent25Sat
26Sun5:207.75:556.812:120.05:118:11First Quarter26Sun
27Mon6:137.46:476.812:320.71:030.25:108:12First Quarter27Mon
28Tue7:057.07:396.71:260.81:550.45:098:13First Quarter28Tue
29Wed7:586.78:316.82:210.92:460.65:098:13First Quarter29Wed
30Thu8:526.59:236.93:160.93:370.75:088:14Waxing Gibbous30Thu
31Fri9:456.310:127.04:090.84:260.85:088:15Waxing Gibbous31Fri
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 1:29 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 11% 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 (11% 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