Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Monday, August 10, 2026
The tide is currently rising in Merrimacport, MA.
Next low tide : 5:23 pm (0.4 ft)
Next high tide : in 2h 36m at 10:54 am (6.4 ft)
Sunset today : 7:53 pm
Sunrise tomorrow : 5:45 am
Moon phase : Waning Crescent (6% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Mar 1952

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:467.64:126.610:32-0.110:480.36:195:33First Quarter1Sat
2Sun4:357.45:026.211:250.211:390.76:175:34First Quarter2Sun
3Mon5:267.15:545.912:190.56:165:35First Quarter3Mon
4Tue6:186.96:485.612:321.01:140.76:145:37First Quarter4Tue
5Wed7:136.77:445.51:271.12:110.86:125:38Waxing Gibbous5Wed
6Thu8:106.68:425.42:231.23:060.96:115:39Waxing Gibbous6Thu
7Fri9:066.69:355.63:181.13:570.86:095:40Waxing Gibbous7Fri
8Sat9:576.710:235.84:091.04:450.76:075:41Waxing Gibbous8Sat
9Sun10:436.811:086.14:570.95:310.66:055:43Waxing Gibbous9Sun
10Mon11:276.911:506.45:430.76:140.56:045:44Full Moon10Mon
11Tue12:107.06:280.56:540.46:025:45Full Moon11Tue
12Wed12:316.712:527.17:110.47:330.46:005:46Full Moon12Wed
13Thu1:127.01:337.17:530.38:110.45:595:47Waning Gibbous13Thu
14Fri1:537.32:167.08:350.28:500.55:575:49Waning Gibbous14Fri
15Sat2:357.53:016.99:200.19:310.65:555:50Waning Gibbous15Sat
16Sun3:217.63:506.710:090.210:180.75:535:51Waning Gibbous16Sun
17Mon4:117.74:436.511:030.211:120.85:525:52Third Quarter17Mon
18Tue5:057.75:396.312:010.25:505:53Third Quarter18Tue
19Wed6:027.66:386.212:100.91:010.25:485:54Third Quarter19Wed
20Thu7:027.67:406.21:130.92:020.25:465:56Third Quarter20Thu
21Fri8:057.68:436.42:160.73:020.05:445:57Waning Crescent21Fri
22Sat9:077.79:426.73:170.43:57-0.25:435:58Waning Crescent22Sat
23Sun10:057.710:367.04:140.14:49-0.35:415:59Waning Crescent23Sun
24Mon11:007.711:277.45:08-0.25:39-0.45:396:00New Moon24Mon
25Tue11:517.76:01-0.46:27-0.45:376:01New Moon25Tue
26Wed12:157.712:407.56:52-0.57:13-0.35:366:03New Moon26Wed
27Thu1:017.91:267.37:40-0.57:57-0.15:346:04Waxing Crescent27Thu
28Fri1:457.92:117.08:28-0.48:420.25:326:05Waxing Crescent28Fri
29Sat2:287.82:566.79:15-0.29:270.55:306:06Waxing Crescent29Sat
30Sun3:137.73:426.410:040.110:160.85:296:07Waxing Crescent30Sun
31Mon4:017.44:316.110:550.411:061.05:276:08First Quarter31Mon
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 2:08 pm — 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 6% 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 Crescent (6% 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