Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Thursday, July 16, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 1h 57m at 9:03 am (-0.6 ft)
Next high tide : 2:47 pm (7.0 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 - Jan 2075

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue11:337.25:490.86:260.27:144:20Full Moon1Tue
2Wed12:006.012:157.46:330.87:100.17:144:21Full Moon2Wed
3Thu12:436.112:577.57:160.87:520.17:144:22Full Moon3Thu
4Fri1:256.21:407.57:580.88:350.17:144:23Waning Gibbous4Fri
5Sat2:086.32:237.68:400.89:180.17:144:24Waning Gibbous5Sat
6Sun2:536.43:087.59:240.810:020.17:144:25Waning Gibbous6Sun
7Mon3:406.53:567.410:120.810:490.17:144:26Waning Gibbous7Mon
8Tue4:296.74:477.311:050.811:380.17:134:27Third Quarter8Tue
9Wed5:216.95:407.112:000.77:134:28Third Quarter9Wed
10Thu6:137.16:366.912:280.212:590.57:134:29Third Quarter10Thu
11Fri7:087.37:346.81:220.21:580.37:134:30Third Quarter11Fri
12Sat8:057.68:346.72:180.22:570.07:124:31Waning Crescent12Sat
13Sun9:027.99:336.63:130.13:54-0.37:124:32Waning Crescent13Sun
14Mon9:588.210:306.74:070.04:50-0.67:114:34Waning Crescent14Mon
15Tue10:528.411:256.75:00-0.15:44-0.87:114:35New Moon15Tue
16Wed11:458.55:54-0.26:36-1.07:104:36New Moon16Wed
17Thu12:186.812:388.56:46-0.37:27-1.07:104:37New Moon17Thu
18Fri1:106.91:288.47:38-0.38:16-1.07:094:38Waxing Crescent18Fri
19Sat1:596.92:178.28:28-0.29:05-0.87:094:40Waxing Crescent19Sat
20Sun2:486.93:067.89:20-0.19:53-0.67:084:41Waxing Crescent20Sun
21Mon3:376.93:557.410:120.110:43-0.37:074:42Waxing Crescent21Mon
22Tue4:276.94:467.011:050.311:320.07:074:43First Quarter22Tue
23Wed5:176.85:376.611:590.47:064:45First Quarter23Wed
24Thu6:076.86:286.312:220.312:530.67:054:46First Quarter24Thu
25Fri6:586.77:216.01:130.51:480.67:044:47First Quarter25Fri
26Sat7:506.78:165.82:050.72:420.67:034:49Waxing Gibbous26Sat
27Sun8:436.89:105.72:570.83:350.67:024:50Waxing Gibbous27Sun
28Mon9:336.910:005.73:470.84:250.57:014:51Waxing Gibbous28Mon
29Tue10:207.010:475.84:350.85:130.47:004:53Waxing Gibbous29Tue
30Wed11:067.111:335.95:220.85:590.26:594:54Full Moon30Wed
31Thu11:507.36:070.76:440.16:584:55Full Moon31Thu
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 11:55 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