Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Tuesday, July 14, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 3h 59m at 7:22 am (-0.5 ft)
Next high tide : 1:03 pm (6.7 ft)
Sunset today : 8:21 pm
Sunrise tomorrow : 5:18 am
Moon phase : New Moon (0% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Jan 1989

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:496.67:126.01:070.91:411.07:144:20Third Quarter1Sun
2Mon7:406.78:065.81:571.02:360.97:144:21Waning Crescent2Mon
3Tue8:326.99:005.72:481.03:290.77:144:22Waning Crescent3Tue
4Wed9:237.19:525.83:371.04:190.57:144:23Waning Crescent4Wed
5Thu10:127.310:425.94:251.05:080.37:144:24Waning Crescent5Thu
6Fri11:007.611:316.15:120.85:570.07:144:25New Moon6Fri
7Sat11:487.95:590.76:44-0.27:144:26New Moon7Sat
8Sun12:206.312:378.16:470.57:31-0.47:144:27New Moon8Sun
9Mon1:086.51:258.37:350.28:17-0.67:134:28Waxing Crescent9Mon
10Tue1:576.82:148.38:240.19:04-0.77:134:29Waxing Crescent10Tue
11Wed2:467.03:058.19:160.09:52-0.67:134:30Waxing Crescent11Wed
12Thu3:377.23:577.810:110.010:43-0.57:134:31Waxing Crescent12Thu
13Fri4:307.44:527.411:090.011:35-0.37:124:32First Quarter13Fri
14Sat5:257.55:486.912:080.07:124:34First Quarter14Sat
15Sun6:207.66:466.512:28-0.11:080.07:114:35First Quarter15Sun
16Mon7:167.57:466.11:240.22:080.17:114:36Waxing Gibbous16Mon
17Tue8:157.58:475.92:210.43:070.17:104:37Waxing Gibbous17Tue
18Wed9:137.59:465.83:170.54:030.07:104:38Waxing Gibbous18Wed
19Thu10:077.410:395.74:110.54:560.07:094:40Waxing Gibbous19Thu
20Fri10:587.411:295.85:030.65:470.07:084:41Full Moon20Fri
21Sat11:467.45:530.66:340.07:084:42Full Moon21Sat
22Sun12:155.912:317.46:410.67:190.07:074:43Full Moon22Sun
23Mon12:586.01:137.37:260.68:010.17:064:45Full Moon23Mon
24Tue1:396.21:547.28:100.68:430.17:054:46Waning Gibbous24Tue
25Wed2:206.32:367.18:540.69:240.27:044:47Waning Gibbous25Wed
26Thu3:026.43:196.99:400.710:070.47:044:49Waning Gibbous26Thu
27Fri3:466.64:056.710:280.710:510.67:034:50Waning Gibbous27Fri
28Sat4:326.64:536.411:170.811:370.87:024:51Third Quarter28Sat
29Sun5:196.75:426.112:090.97:014:53Third Quarter29Sun
30Mon6:086.76:345.912:251.01:030.97:004:54Third Quarter30Mon
31Tue7:006.87:295.71:161.11:590.96:594:55Third Quarter31Tue
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 10:12 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 0% 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 (0% 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