Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Saturday, July 25, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 2h 36m at 4:33 pm (1.2 ft)
Next high tide : 10:22 pm (7.0 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 5:28 am
Moon phase : Waxing Gibbous (86% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Apr 2085

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:037.26:346.112:190.912:580.56:247:10First Quarter1Sun
2Mon6:557.07:275.91:131.11:520.76:227:11First Quarter2Mon
3Tue7:506.88:225.92:081.22:470.86:207:13First Quarter3Tue
4Wed8:456.69:176.03:041.23:400.86:197:14Waxing Gibbous4Wed
5Thu9:416.610:106.23:591.14:300.86:177:15Waxing Gibbous5Thu
6Fri10:326.610:586.44:500.95:180.76:157:16Waxing Gibbous6Fri
7Sat11:206.711:426.75:390.76:020.76:137:17Waxing Gibbous7Sat
8Sun12:056.76:250.56:460.66:127:18Full Moon8Sun
9Mon12:257.012:496.87:110.47:280.66:107:20Full Moon9Mon
10Tue1:077.31:326.97:550.28:090.66:087:21Full Moon10Tue
11Wed1:497.62:166.98:380.18:490.66:077:22Full Moon11Wed
12Thu2:327.83:006.99:220.09:300.66:057:23Waning Gibbous12Thu
13Fri3:168.03:476.910:08-0.110:150.76:037:24Waning Gibbous13Fri
14Sat4:048.04:376.810:580.011:060.76:027:25Waning Gibbous14Sat
15Sun4:568.05:316.711:510.06:007:26Third Quarter15Sun
16Mon5:518.06:276.712:020.812:470.05:597:28Third Quarter16Mon
17Tue6:487.87:256.71:020.81:450.05:577:29Third Quarter17Tue
18Wed7:487.78:246.92:030.72:430.05:557:30Third Quarter18Wed
19Thu8:497.69:257.13:050.53:39-0.15:547:31Waning Crescent19Thu
20Fri9:507.510:227.44:040.24:33-0.15:527:32Waning Crescent20Fri
21Sat10:477.411:157.75:01-0.15:25-0.25:517:33Waning Crescent21Sat
22Sun11:417.35:55-0.36:15-0.15:497:35New Moon22Sun
23Mon12:058.012:327.26:47-0.47:030.05:487:36New Moon23Mon
24Tue12:538.11:217.17:37-0.57:500.15:467:37New Moon24Tue
25Wed1:398.22:076.98:25-0.58:360.35:457:38New Moon25Wed
26Thu2:238.12:526.89:12-0.39:220.55:437:39Waxing Crescent26Thu
27Fri3:088.03:376.69:59-0.110:090.75:427:40Waxing Crescent27Fri
28Sat3:537.84:236.410:470.110:580.95:407:41Waxing Crescent28Sat
29Sun4:407.55:126.311:360.411:491.15:397:43Waxing Crescent29Sun
30Mon5:307.36:026.212:270.65:387:44First Quarter30Mon
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 7:27 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 86% 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 Waxing Gibbous (86% 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