Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Friday, July 3, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 4h 51m at 10:13 pm (1.2 ft)
Next high tide (tomorrow) : 3:57 am (7.5 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:10 am
Moon phase : Waning Gibbous (88% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Jun 2057

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:167.312:416.37:030.47:130.95:078:16New Moon1Fri
2Sat12:577.41:236.37:470.37:561.05:078:16New Moon2Sat
3Sun1:377.52:056.38:310.38:381.15:068:17New Moon3Sun
4Mon2:187.62:476.39:130.49:201.25:068:18Waxing Crescent4Mon
5Tue3:007.63:306.39:570.410:021.35:068:19Waxing Crescent5Tue
6Wed3:447.64:156.310:410.510:481.35:058:19Waxing Crescent6Wed
7Thu4:307.55:036.411:280.511:371.45:058:20Waxing Crescent7Thu
8Fri5:187.45:546.512:170.65:058:21First Quarter8Fri
9Sat6:097.36:456.612:291.41:060.65:058:21First Quarter9Sat
10Sun7:027.37:376.81:231.31:560.55:058:22First Quarter10Sun
11Mon7:567.28:307.12:191.12:480.55:048:22First Quarter11Mon
12Tue8:527.19:257.53:160.83:400.45:048:23Waxing Gibbous12Tue
13Wed9:497.110:187.94:120.54:310.35:048:23Waxing Gibbous13Wed
14Thu10:457.111:108.35:060.15:210.25:048:24Waxing Gibbous14Thu
15Fri11:407.16:00-0.36:120.15:048:24Full Moon15Fri
16Sat12:028.612:347.26:53-0.67:030.15:048:24Full Moon16Sat
17Sun12:548.81:277.27:46-0.87:550.05:058:25Full Moon17Sun
18Mon1:469.02:207.28:38-0.98:470.05:058:25Full Moon18Mon
19Tue2:388.93:127.19:30-0.99:390.15:058:25Waning Gibbous19Tue
20Wed3:308.74:047.010:22-0.710:340.25:058:26Waning Gibbous20Wed
21Thu4:228.44:587.011:14-0.511:300.45:058:26Waning Gibbous21Thu
22Fri5:178.05:536.912:07-0.35:068:26Third Quarter22Fri
23Sat6:117.66:476.912:260.51:000.05:068:26Third Quarter23Sat
24Sun7:057.27:416.91:230.61:520.25:068:26Third Quarter24Sun
25Mon8:006.88:347.02:200.72:440.45:068:26Third Quarter25Mon
26Tue8:556.59:277.03:160.73:360.65:078:26Waning Crescent26Tue
27Wed9:506.310:167.14:100.74:250.75:078:26Waning Crescent27Wed
28Thu10:406.111:027.25:010.65:130.85:088:26Waning Crescent28Thu
29Fri11:276.111:467.35:490.65:590.95:088:26Waning Crescent29Fri
30Sat12:126.16:360.56:441.05:098:26New Moon30Sat
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 1:05 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 88% 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 Waning Gibbous (88% 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