Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide (tomorrow) : in 4h 08m at 12:20 am (0.5 ft)
Next high tide (tomorrow) : 6:05 am (7.4 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:05 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Jan 2022

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:488.411:236.64:560.15:42-0.77:144:20New Moon1Sat
2Sun11:428.65:490.06:35-0.97:144:21New Moon2Sun
3Mon12:176.612:358.66:420.07:27-1.07:144:22New Moon3Mon
4Tue1:096.71:278.57:34-0.18:17-0.97:144:23Waxing Crescent4Tue
5Wed2:006.72:178.38:26-0.19:07-0.87:144:24Waxing Crescent5Wed
6Thu2:506.73:088.09:190.09:57-0.67:144:25Waxing Crescent6Thu
7Fri3:426.74:007.610:130.210:48-0.37:144:26Waxing Crescent7Fri
8Sat4:346.74:527.111:080.411:38-0.17:144:27First Quarter8Sat
9Sun5:256.75:446.712:030.57:134:28First Quarter9Sun
10Mon6:166.76:366.312:280.212:580.67:134:29First Quarter10Mon
11Tue7:086.77:306.01:190.51:540.77:134:30First Quarter11Tue
12Wed8:006.78:255.72:110.72:490.67:124:31Waxing Gibbous12Wed
13Thu8:516.89:185.63:020.83:410.67:124:32Waxing Gibbous13Thu
14Fri9:406.910:085.63:510.94:310.57:124:34Waxing Gibbous14Fri
15Sat10:267.010:545.64:380.95:190.47:114:35Waxing Gibbous15Sat
16Sun11:117.111:395.75:250.96:050.47:114:36Full Moon16Sun
17Mon11:557.26:100.96:500.37:104:37Full Moon17Mon
18Tue12:225.812:387.36:540.97:320.27:094:38Full Moon18Tue
19Wed1:056.01:207.47:360.88:140.17:094:40Full Moon19Wed
20Thu1:486.22:027.58:180.88:550.17:084:41Waning Gibbous20Thu
21Fri2:316.42:467.59:010.79:370.17:084:42Waning Gibbous21Fri
22Sat3:166.63:337.49:470.710:220.17:074:43Waning Gibbous22Sat
23Sun4:046.84:237.210:390.611:080.27:064:45Waning Gibbous23Sun
24Mon4:547.05:157.011:330.511:580.37:054:46Third Quarter24Mon
25Tue5:467.26:106.712:310.47:044:47Third Quarter25Tue
26Wed6:407.47:086.512:500.41:320.37:044:48Third Quarter26Wed
27Thu7:377.58:096.31:470.42:330.17:034:50Waning Crescent27Thu
28Fri8:367.79:106.22:450.43:32-0.27:024:51Waning Crescent28Fri
29Sat9:348.010:096.33:420.34:28-0.47:014:52Waning Crescent29Sat
30Sun10:318.111:056.44:370.25:23-0.67:004:54New Moon30Sun
31Mon11:268.25:320.06:17-0.76:594:55New Moon31Mon
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 3:12 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 transitional phase. Tonight's moon is 37% 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 shifting between spring and neap.

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 First Quarter (37% illuminated). This places Merrimacport, MA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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