Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Saturday, August 8, 2026
The tide is currently rising in Merrimacport, MA.
Next low tide (tomorrow) : 4:17 am (0.1 ft)
Next high tide : in 2h 47m at 9:20 pm (7.9 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 - May 1955

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun8:437.19:196.82:570.63:280.25:387:43Waxing Gibbous1Sun
2Mon9:426.810:137.03:550.54:200.35:377:44Waxing Gibbous2Mon
3Tue10:366.711:017.14:480.55:090.45:357:45Waxing Gibbous3Tue
4Wed11:246.511:457.25:390.45:550.55:347:46Waxing Gibbous4Wed
5Thu12:096.56:260.36:400.75:337:47Full Moon5Thu
6Fri12:267.412:526.47:120.37:240.85:317:49Full Moon6Fri
7Sat1:077.41:336.47:560.38:060.95:307:50Full Moon7Sat
8Sun1:477.52:156.48:390.38:481.05:297:51Full Moon8Sun
9Mon2:287.62:566.49:220.39:301.15:287:52Waning Gibbous9Mon
10Tue3:107.63:396.410:060.410:131.25:277:53Waning Gibbous10Tue
11Wed3:547.54:256.410:510.510:591.35:257:54Waning Gibbous11Wed
12Thu4:417.45:136.411:390.611:491.35:247:55Waning Gibbous12Thu
13Fri5:307.36:046.412:280.75:237:56Third Quarter13Fri
14Sat6:217.26:556.512:411.41:170.75:227:57Third Quarter14Sat
15Sun7:137.17:476.71:351.32:090.75:217:58Third Quarter15Sun
16Mon8:087.18:417.02:321.13:010.65:207:59Third Quarter16Mon
17Tue9:047.09:357.43:280.93:520.55:198:01Waning Crescent17Tue
18Wed10:017.110:287.84:230.54:420.45:188:02Waning Crescent18Wed
19Thu10:557.111:198.25:160.15:310.35:178:03Waning Crescent19Thu
20Fri11:497.26:08-0.36:210.25:168:04New Moon20Fri
21Sat12:108.612:427.27:01-0.67:110.15:158:05New Moon21Sat
22Sun1:018.81:347.27:53-0.88:030.05:148:06New Moon22Sun
23Mon1:539.02:277.28:45-0.98:540.05:148:07Waxing Crescent23Mon
24Tue2:458.93:187.29:36-0.99:470.15:138:07Waxing Crescent24Tue
25Wed3:378.84:127.110:29-0.710:420.25:128:08Waxing Crescent25Wed
26Thu4:318.45:067.111:22-0.511:390.35:118:09Waxing Crescent26Thu
27Fri5:268.06:027.012:16-0.35:118:10First Quarter27Fri
28Sat6:217.66:577.012:360.51:090.05:108:11First Quarter28Sat
29Sun7:177.27:527.01:340.62:030.25:098:12First Quarter29Sun
30Mon8:136.88:477.02:310.72:560.45:098:13Waxing Gibbous30Mon
31Tue9:096.59:407.13:280.73:470.65:088:14Waxing Gibbous31Tue
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 12:48 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