Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Saturday, August 8, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 2h 41m at 3:18 am (0.3 ft)
Next high tide : 8:53 am (6.3 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 5:42 am
Moon phase : Waning Crescent (22% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Dec 1956

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat11:127.811:406.45:210.35:59-0.26:554:11New Moon1Sat
2Sun11:567.86:080.46:46-0.26:564:10New Moon2Sun
3Mon12:256.312:407.76:540.57:31-0.16:574:10New Moon3Mon
4Tue1:086.31:227.77:390.68:150.06:584:10Waxing Crescent4Tue
5Wed1:506.32:047.68:230.78:590.16:594:10Waxing Crescent5Wed
6Thu2:336.32:487.49:080.99:440.27:004:10Waxing Crescent6Thu
7Fri3:186.33:347.39:561.010:300.47:014:09Waxing Crescent7Fri
8Sat4:066.44:237.110:461.111:180.57:024:09First Quarter8Sat
9Sun4:556.45:136.911:371.17:034:09First Quarter9Sun
10Mon5:456.56:036.612:070.612:311.17:034:09First Quarter10Mon
11Tue6:356.66:566.512:560.71:251.07:044:10First Quarter11Tue
12Wed7:276.87:506.31:470.72:200.97:054:10Waxing Gibbous12Wed
13Thu8:197.18:456.32:370.73:130.67:064:10Waxing Gibbous13Thu
14Fri9:117.49:386.43:270.74:040.37:074:10Waxing Gibbous14Fri
15Sat10:007.710:296.54:150.64:540.07:074:10Waxing Gibbous15Sat
16Sun10:508.011:206.65:030.45:44-0.37:084:11Full Moon16Sun
17Mon11:398.35:510.36:34-0.67:094:11Full Moon17Mon
18Tue12:116.812:308.56:410.17:23-0.87:094:11Full Moon18Tue
19Wed1:017.01:208.77:31-0.18:12-0.97:104:12Waning Gibbous19Wed
20Thu1:527.12:118.68:22-0.29:02-0.97:114:12Waning Gibbous20Thu
21Fri2:447.33:038.49:15-0.29:53-0.87:114:12Waning Gibbous21Fri
22Sat3:377.43:578.110:12-0.110:46-0.77:124:13Waning Gibbous22Sat
23Sun4:327.44:537.711:10-0.111:39-0.57:124:14Third Quarter23Sun
24Mon5:277.45:507.212:080.07:124:14Third Quarter24Mon
25Tue6:237.56:476.812:33-0.31:070.17:134:15Third Quarter25Tue
26Wed7:207.47:466.41:28-0.12:060.17:134:15Waning Crescent26Wed
27Thu8:177.48:446.22:230.13:030.17:134:16Waning Crescent27Thu
28Fri9:117.49:406.03:170.33:570.17:144:17Waning Crescent28Fri
29Sat10:027.410:306.04:080.44:480.07:144:18Waning Crescent29Sat
30Sun10:497.411:176.04:570.55:360.07:144:18New Moon30Sun
31Mon11:337.45:440.56:230.07:144:19New 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 6:05 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 transitional phase. Tonight's moon is 22% 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 Waning Crescent (22% 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