Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Thursday, August 6, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 5m at 1:16 am (0.5 ft)
Next high tide : 6:54 am (6.7 ft)
Sunset today : 7:58 pm
Sunrise tomorrow : 5:40 am
Moon phase : Third Quarter (44% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Dec 1960

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:447.511:096.54:530.25:27-0.16:554:11Full Moon1Thu
2Fri11:277.611:536.45:400.36:14-0.16:564:10Full Moon2Fri
3Sat12:097.66:250.46:59-0.16:574:10Full Moon3Sat
4Sun12:366.412:517.67:090.67:430.06:584:10Full Moon4Sun
5Mon1:186.41:327.67:520.78:260.06:594:10Waning Gibbous5Mon
6Tue2:006.42:157.58:360.89:100.17:004:10Waning Gibbous6Tue
7Wed2:446.42:597.49:210.99:550.37:014:09Waning Gibbous7Wed
8Thu3:296.43:457.310:081.010:430.47:024:09Waning Gibbous8Thu
9Fri4:186.44:347.110:581.111:310.47:034:09Third Quarter9Fri
10Sat5:076.55:257.011:501.17:034:09Third Quarter10Sat
11Sun5:586.66:166.812:200.512:441.17:044:10Third Quarter11Sun
12Mon6:496.77:106.71:110.51:381.07:054:10Third Quarter12Mon
13Tue7:426.98:056.72:020.52:330.77:064:10Waning Crescent13Tue
14Wed8:357.39:006.72:530.53:260.47:074:10Waning Crescent14Wed
15Thu9:277.69:536.83:430.34:180.07:074:10Waning Crescent15Thu
16Fri10:178.010:456.94:310.25:09-0.37:084:11Waning Crescent16Fri
17Sat11:078.311:377.15:200.06:00-0.67:094:11New Moon17Sat
18Sun11:588.66:10-0.16:50-0.97:094:11New Moon18Sun
19Mon12:297.212:498.87:01-0.37:40-1.17:104:12New Moon19Mon
20Tue1:217.31:408.87:52-0.38:31-1.17:114:12Waxing Crescent20Tue
21Wed2:127.42:328.78:44-0.39:22-1.17:114:12Waxing Crescent21Wed
22Thu3:057.43:258.49:38-0.310:15-0.97:124:13Waxing Crescent22Thu
23Fri3:597.34:208.010:35-0.211:09-0.77:124:14First Quarter23Fri
24Sat4:557.35:167.611:330.07:124:14First Quarter24Sat
25Sun5:517.26:127.212:03-0.512:310.17:134:15First Quarter25Sun
26Mon6:477.27:096.712:57-0.31:290.27:134:15First Quarter26Mon
27Tue7:437.28:076.41:520.02:270.27:134:16Waxing Gibbous27Tue
28Wed8:387.29:046.22:460.13:220.27:144:17Waxing Gibbous28Wed
29Thu9:307.29:556.13:370.34:130.17:144:18Waxing Gibbous29Thu
30Fri10:177.210:436.14:260.45:020.17:144:18Waxing Gibbous30Fri
31Sat11:017.35:130.55:500.17:144:19Full Moon31Sat
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 4:05 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 neap phase. Tonight's moon is 44% 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 minimum.

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 Third Quarter (44% illuminated). This places Merrimacport, MA in a neap tide cycle, so tidal ranges are near their weekly minimum 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