Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Tuesday, July 7, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 3h 59m at 1:08 pm (0.6 ft)
Next high tide : 6:56 pm (7.3 ft)
Sunset today : 8:24 pm
Sunrise tomorrow : 5:13 am
Moon phase : Third Quarter (52% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - May 2063

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue2:578.13:306.79:500.09:530.95:377:44Waxing Crescent1Tue
2Wed3:458.14:206.610:400.010:440.95:367:45Waxing Crescent2Wed
3Thu4:378.15:146.611:340.011:410.95:347:46Waxing Crescent3Thu
4Fri5:328.06:116.612:300.05:337:47First Quarter4Fri
5Sat6:307.97:096.612:420.91:270.15:327:49First Quarter5Sat
6Sun7:297.78:086.81:430.82:240.15:317:50First Quarter6Sun
7Mon8:307.59:087.12:450.73:200.15:297:51Waxing Gibbous7Mon
8Tue9:317.310:057.43:460.44:140.05:287:52Waxing Gibbous8Tue
9Wed10:307.210:587.74:430.15:050.15:277:53Waxing Gibbous9Wed
10Thu11:247.011:477.95:38-0.15:540.15:267:54Waxing Gibbous10Thu
11Fri12:156.96:30-0.26:420.35:257:55Full Moon11Fri
12Sat12:348.11:046.77:20-0.37:300.45:237:56Full Moon12Sat
13Sun1:208.11:506.68:08-0.28:160.65:227:57Full Moon13Sun
14Mon2:048.02:356.58:55-0.19:010.85:217:58Waning Gibbous14Mon
15Tue2:487.93:196.39:400.19:471.05:207:59Waning Gibbous15Tue
16Wed3:327.74:046.210:270.310:341.15:198:00Waning Gibbous16Wed
17Thu4:197.54:526.111:160.511:251.35:188:02Waning Gibbous17Thu
18Fri5:087.35:426.112:060.75:178:03Third Quarter18Fri
19Sat5:597.16:336.112:171.412:560.85:168:04Third Quarter19Sat
20Sun6:506.97:246.21:111.51:460.95:168:05Third Quarter20Sun
21Mon7:436.78:166.32:061.42:371.05:158:06Third Quarter21Mon
22Tue8:366.59:086.53:011.33:281.05:148:07Waning Crescent22Tue
23Wed9:306.49:586.83:551.24:161.05:138:07Waning Crescent23Wed
24Thu10:226.410:457.14:460.95:011.05:128:08Waning Crescent24Thu
25Fri11:116.411:307.45:350.75:461.05:128:09Waning Crescent25Fri
26Sat11:586.46:220.46:301.05:118:10New Moon26Sat
27Sun12:167.712:466.57:100.27:150.95:108:11New Moon27Sun
28Mon1:028.01:346.67:570.08:000.85:108:12New Moon28Mon
29Tue1:498.22:226.68:44-0.28:460.85:098:13New Moon29Tue
30Wed2:378.43:116.79:32-0.29:350.75:088:14Waxing Crescent30Wed
31Thu3:278.44:036.810:22-0.310:280.75:088:15Waxing Crescent31Thu
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 4:02 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 neap phase. Tonight's moon is 52% 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 (52% 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