Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Thursday, July 16, 2026
The tide is currently rising in Merrimacport, MA.
Next low tide : 9:03 am (-0.6 ft)
Next high tide : in 42m at 2:15 am (8.6 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:20 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Nov 1987

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:206.88:447.32:330.12:560.56:174:37Waxing Gibbous1Sun
2Mon9:187.29:417.23:260.03:520.26:194:36Waxing Gibbous2Mon
3Tue10:107.510:347.14:170.04:46-0.16:204:34Waxing Gibbous3Tue
4Wed10:577.711:247.05:050.15:37-0.26:214:33Full Moon4Wed
5Thu11:437.95:520.26:26-0.36:224:32Full Moon5Thu
6Fri12:116.812:267.96:370.37:13-0.26:244:31Full Moon6Fri
7Sat12:556.61:097.97:210.57:58-0.16:254:29Waning Gibbous7Sat
8Sun1:386.51:517.88:050.88:430.16:264:28Waning Gibbous8Sun
9Mon2:216.32:347.68:501.09:300.36:274:27Waning Gibbous9Mon
10Tue3:066.13:207.49:371.210:190.56:294:26Waning Gibbous10Tue
11Wed3:546.04:097.210:271.411:090.76:304:25Third Quarter11Wed
12Thu4:445.95:017.011:201.56:314:24Third Quarter12Thu
13Fri5:365.95:546.812:000.812:141.56:324:23Third Quarter13Fri
14Sat6:296.06:476.612:520.91:101.56:344:22Third Quarter14Sat
15Sun7:226.17:426.51:440.92:061.36:354:21Waning Crescent15Sun
16Mon8:156.48:366.52:350.92:591.16:364:20Waning Crescent16Mon
17Tue9:056.79:276.53:230.83:500.86:384:19Waning Crescent17Tue
18Wed9:517.110:156.64:080.84:380.56:394:18Waning Crescent18Wed
19Thu10:367.411:036.64:510.75:250.36:404:18New Moon19Thu
20Fri11:217.811:506.65:350.76:120.06:414:17New Moon20Fri
21Sat12:068.16:190.66:59-0.26:424:16New Moon21Sat
22Sun12:386.712:538.37:030.67:47-0.46:444:15New Moon22Sun
23Mon1:266.71:418.47:490.68:35-0.46:454:15Waxing Crescent23Mon
24Tue2:156.72:318.48:380.69:27-0.46:464:14Waxing Crescent24Tue
25Wed3:086.63:258.39:330.610:22-0.36:474:13Waxing Crescent25Wed
26Thu4:036.64:228.010:320.611:18-0.26:484:13First Quarter26Thu
27Fri5:016.65:207.811:330.66:504:12First Quarter27Fri
28Sat5:596.76:207.412:14-0.112:340.66:514:12First Quarter28Sat
29Sun6:586.97:207.11:100.01:360.56:524:12First Quarter29Sun
30Mon7:577.18:216.82:050.02:360.36:534:11Waxing Gibbous30Mon
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 5:39 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 7% 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 Waxing Crescent (7% 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