Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Monday, August 10, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 11m at 5:14 am (-0.1 ft)
Next high tide : 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 - Jun 1952

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun7:186.87:516.51:431.42:120.95:078:15First Quarter1Sun
2Mon8:116.68:436.72:381.33:021.05:078:16First Quarter2Mon
3Tue9:056.59:347.03:321.13:511.05:068:17Waxing Gibbous3Tue
4Wed9:596.410:237.44:250.94:381.05:068:17Waxing Gibbous4Wed
5Thu10:516.411:117.75:150.65:250.95:068:18Waxing Gibbous5Thu
6Fri11:416.56:050.36:110.85:058:19Full Moon6Fri
7Sat12:008.012:316.66:540.06:590.75:058:19Full Moon7Sat
8Sun12:498.31:226.77:44-0.27:480.65:058:20Full Moon8Sun
9Mon1:398.52:136.88:34-0.48:380.55:058:21Full Moon9Mon
10Tue2:308.73:046.99:24-0.59:290.45:048:21Waning Gibbous10Tue
11Wed3:218.73:567.010:15-0.510:240.45:048:22Waning Gibbous11Wed
12Thu4:148.54:517.111:07-0.511:210.45:048:22Waning Gibbous12Thu
13Fri5:108.25:477.212:01-0.45:048:23Third Quarter13Fri
14Sat6:067.86:437.312:200.412:54-0.25:048:23Third Quarter14Sat
15Sun7:037.47:387.41:190.41:480.05:048:24Third Quarter15Sun
16Mon8:017.08:357.52:190.42:410.25:048:24Waning Crescent16Mon
17Tue8:596.69:307.63:180.43:350.45:048:24Waning Crescent17Tue
18Wed9:576.310:237.64:150.34:270.65:048:25Waning Crescent18Wed
19Thu10:516.211:117.65:080.35:160.75:048:25Waning Crescent19Thu
20Fri11:406.011:577.65:590.36:050.85:058:25New Moon20Fri
21Sat12:276.06:470.36:521.05:058:25New Moon21Sat
22Sun12:427.61:126.07:340.37:381.05:058:26New Moon22Sun
23Mon1:257.61:546.08:190.48:231.15:058:26New Moon23Mon
24Tue2:087.52:366.19:020.49:061.15:068:26Waxing Crescent24Tue
25Wed2:507.53:196.29:450.59:501.25:068:26Waxing Crescent25Wed
26Thu3:337.44:036.310:280.510:361.25:068:26Waxing Crescent26Thu
27Fri4:187.34:496.411:130.611:251.35:078:26Waxing Crescent27Fri
28Sat5:057.25:376.511:580.75:078:26First Quarter28Sat
29Sun5:537.06:256.712:151.312:440.85:088:26First Quarter29Sun
30Mon6:436.77:146.81:071.31:310.95:088:26First 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 8:04 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 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