Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Tuesday, June 23, 2026
The tide is currently rising in Merrimacport, MA.
Next low tide : 2:33 pm (0.6 ft)
Next high tide : in 1h 01m at 7:53 am (6.6 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:06 am
Moon phase : First Quarter (67% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Oct 2042

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed2:148.02:358.58:47-0.39:18-0.86:416:25Waning Gibbous1Wed
2Thu3:047.73:248.69:34-0.210:10-0.76:426:23Waning Gibbous2Thu
3Fri3:557.44:158.510:240.111:05-0.56:436:21Waning Gibbous3Fri
4Sat4:487.05:088.211:170.46:446:20Third Quarter4Sat
5Sun5:436.66:047.912:01-0.212:140.76:466:18Third Quarter5Sun
6Mon6:406.37:027.512:590.11:120.96:476:16Third Quarter6Mon
7Tue7:396.08:017.21:570.42:121.16:486:14Third Quarter7Tue
8Wed8:406.09:027.02:560.53:111.16:496:13Waning Crescent8Wed
9Thu9:416.010:016.93:520.64:081.06:506:11Waning Crescent9Thu
10Fri10:346.210:536.84:430.65:000.96:516:09Waning Crescent10Fri
11Sat11:206.411:386.85:300.65:490.86:526:08Waning Crescent11Sat
12Sun12:016.66:150.66:360.66:546:06New Moon12Sun
13Mon12:216.812:406.96:570.77:200.56:556:04New Moon13Mon
14Tue1:026.71:197.17:380.78:030.56:566:03New Moon14Tue
15Wed1:426.71:577.28:170.88:440.46:576:01New Moon15Wed
16Thu2:226.62:367.38:561.09:260.56:585:59Waxing Crescent16Thu
17Fri3:026.53:167.49:341.110:080.67:005:58Waxing Crescent17Fri
18Sat3:456.43:597.410:141.310:540.77:015:56Waxing Crescent18Sat
19Sun4:316.34:467.310:591.511:440.77:025:55Waxing Crescent19Sun
20Mon5:206.25:377.311:491.67:035:53First Quarter20Mon
21Tue6:136.16:317.212:370.812:441.67:045:52First Quarter21Tue
22Wed7:096.17:287.21:330.81:431.57:065:50First Quarter22Wed
23Thu8:066.28:277.32:290.72:441.37:075:49First Quarter23Thu
24Fri9:046.59:267.43:250.53:430.97:085:47Waxing Gibbous24Fri
25Sat10:016.910:237.64:180.24:380.57:095:46Waxing Gibbous25Sat
26Sun10:547.411:187.75:080.05:320.07:115:44Waxing Gibbous26Sun
27Mon11:447.95:56-0.16:25-0.47:125:43Full Moon27Mon
28Tue12:117.712:338.46:44-0.27:17-0.77:135:41Full Moon28Tue
29Wed1:037.61:238.77:33-0.28:09-0.97:145:40Full Moon29Wed
30Thu1:537.52:118.88:21-0.18:59-0.97:165:39Waning Gibbous30Thu
31Fri2:447.23:008.79:090.09:51-0.87:175:37Waning Gibbous31Fri
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 11:13 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 67% 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 (67% 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