Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 1h 18m at 8:21 pm (0.1 ft)
Next high tide (tomorrow) : 2:15 am (8.6 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 - Apr 1988

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:466.86:040.66:260.65:256:10Full Moon1Fri
2Sat12:056.812:276.86:480.57:060.65:236:11Full Moon2Sat
3Sun12:457.12:086.88:300.38:440.76:217:12Full Moon3Sun
4Mon2:257.42:506.89:110.39:220.86:197:13Waning Gibbous4Mon
5Tue3:067.63:346.79:540.210:010.96:187:14Waning Gibbous5Tue
6Wed3:507.74:206.610:400.210:451.06:167:16Waning Gibbous6Wed
7Thu4:377.75:116.411:320.311:361.16:147:17Waning Gibbous7Thu
8Fri5:307.76:066.312:270.36:137:18Third Quarter8Fri
9Sat6:267.67:036.312:341.11:250.36:117:19Third Quarter9Sat
10Sun7:257.68:036.31:361.12:250.36:097:20Third Quarter10Sun
11Mon8:267.69:056.52:390.93:240.26:077:21Waning Crescent11Mon
12Tue9:287.610:046.83:410.74:190.06:067:22Waning Crescent12Tue
13Wed10:287.611:007.34:390.35:12-0.26:047:24Waning Crescent13Wed
14Thu11:247.611:517.75:35-0.16:02-0.26:037:25Waning Crescent14Thu
15Fri12:177.56:29-0.36:51-0.26:017:26New Moon15Fri
16Sat12:418.01:087.47:21-0.57:38-0.25:597:27New Moon16Sat
17Sun1:288.21:567.28:11-0.68:240.05:587:28New Moon17Sun
18Mon2:148.22:437.08:59-0.69:100.25:567:29Waxing Crescent18Mon
19Tue2:598.23:296.79:47-0.49:570.55:547:30Waxing Crescent19Tue
20Wed3:448.04:156.510:36-0.110:450.85:537:32Waxing Crescent20Wed
21Thu4:327.75:056.211:270.211:371.15:517:33Waxing Crescent21Thu
22Fri5:227.45:566.012:190.55:507:34First Quarter22Fri
23Sat6:147.16:485.912:301.31:120.75:487:35First Quarter23Sat
24Sun7:086.97:425.81:251.42:050.95:477:36First Quarter24Sun
25Mon8:036.78:375.92:221.42:591.05:457:37First Quarter25Mon
26Tue8:596.69:326.13:181.43:510.95:447:38Waxing Gibbous26Tue
27Wed9:536.510:226.44:121.24:390.95:427:40Waxing Gibbous27Wed
28Thu10:436.511:076.75:021.05:250.95:417:41Waxing Gibbous28Thu
29Fri11:296.511:507.05:500.86:080.95:407:42Waxing Gibbous29Fri
30Sat12:146.66:360.66:510.95:387:43Full Moon30Sat
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8440369)

Common Questions About Merrimacport, MA Tides

Show All
What time does the tide turn (slack tide) in Merrimacport, MA today?

Slack tide in Merrimacport, MA is approximately 11:18 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