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 5h 40m at 9:13 pm (0.0 ft)
Next high tide (tomorrow) : 3:05 am (8.4 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 1987

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu12:496.61:078.77:130.07:58-0.97:144:20New Moon1Thu
2Fri1:416.71:598.58:05-0.18:49-0.97:144:21Waxing Crescent2Fri
3Sat2:326.82:508.38:59-0.19:39-0.77:144:21Waxing Crescent3Sat
4Sun3:246.93:437.99:540.010:30-0.57:144:22Waxing Crescent4Sun
5Mon4:176.94:367.410:500.211:21-0.37:144:23First Quarter5Mon
6Tue5:106.95:296.911:460.37:144:24First Quarter6Tue
7Wed6:026.96:226.412:120.012:430.57:144:25First Quarter7Wed
8Thu6:546.97:176.01:030.31:390.57:144:26First Quarter8Thu
9Fri7:476.98:135.71:550.62:350.67:144:27Waxing Gibbous9Fri
10Sat8:406.99:085.62:470.83:290.67:134:29Waxing Gibbous10Sat
11Sun9:306.99:585.53:380.94:190.57:134:30Waxing Gibbous11Sun
12Mon10:167.010:455.54:260.95:080.57:134:31Waxing Gibbous12Mon
13Tue11:017.011:305.65:131.05:550.47:124:32Full Moon13Tue
14Wed11:457.15:591.06:400.47:124:33Full Moon14Wed
15Thu12:135.712:287.26:430.97:220.37:114:34Full Moon15Thu
16Fri12:555.81:107.37:260.98:040.37:114:35Full Moon16Fri
17Sat1:376.01:517.38:070.98:440.27:104:37Waning Gibbous17Sat
18Sun2:196.22:347.38:500.89:260.37:104:38Waning Gibbous18Sun
19Mon3:036.43:187.29:340.810:080.37:094:39Waning Gibbous19Mon
20Tue3:486.64:067.110:220.810:520.47:094:40Waning Gibbous20Tue
21Wed4:366.84:566.811:150.711:380.57:084:42Third Quarter21Wed
22Thu5:267.05:496.612:100.77:074:43Third Quarter22Thu
23Fri6:187.26:456.412:280.61:090.57:064:44Third Quarter23Fri
24Sat7:137.47:446.21:230.72:100.37:064:45Waning Crescent24Sat
25Sun8:117.68:466.12:200.73:090.17:054:47Waning Crescent25Sun
26Mon9:107.89:456.13:180.64:07-0.27:044:48Waning Crescent26Mon
27Tue10:088.110:426.34:140.45:02-0.57:034:49Waning Crescent27Tue
28Wed11:038.311:386.45:090.25:56-0.77:024:51New Moon28Wed
29Thu11:588.46:040.06:48-0.87:014:52New Moon29Thu
30Fri12:316.712:518.46:57-0.27:38-0.97:004:53New Moon30Fri
31Sat1:226.91:418.27:48-0.38:25-0.86:594:54Waxing Crescent31Sat
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 12:09 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