Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Monday, June 29, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 36m at 7:17 am (0.6 ft)
Next high tide : 12:51 pm (5.9 ft)
Sunset today : 8:26 pm
Sunrise tomorrow : 5:08 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Jun 2009

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon7:457.28:217.32:020.52:290.15:078:15First Quarter1Mon
2Tue8:436.89:177.43:010.53:230.35:078:16Waxing Gibbous2Tue
3Wed9:416.510:107.43:580.44:140.55:068:17Waxing Gibbous3Wed
4Thu10:356.310:587.54:520.45:030.65:068:18Waxing Gibbous4Thu
5Fri11:256.211:437.55:420.35:510.85:068:18Waxing Gibbous5Fri
6Sat12:116.16:310.36:380.95:058:19Full Moon6Sat
7Sun12:267.512:556.17:170.37:231.05:058:20Full Moon7Sun
8Mon1:097.61:386.18:020.48:071.15:058:20Full Moon8Mon
9Tue1:517.62:206.18:460.48:501.15:058:21Full Moon9Tue
10Wed2:337.63:026.29:290.49:341.25:058:21Waning Gibbous10Wed
11Thu3:167.53:466.210:120.510:181.35:048:22Waning Gibbous11Thu
12Fri4:007.44:326.310:570.611:061.35:048:22Waning Gibbous12Fri
13Sat4:477.35:196.411:430.611:561.35:048:23Waning Gibbous13Sat
14Sun5:357.26:086.612:290.75:048:23Third Quarter14Sun
15Mon6:257.06:586.712:481.31:170.85:048:24Third Quarter15Mon
16Tue7:176.87:487.01:411.22:050.85:048:24Third Quarter16Tue
17Wed8:106.68:407.22:371.12:560.95:048:24Third Quarter17Wed
18Thu9:066.59:337.53:330.83:470.95:048:25Waning Crescent18Thu
19Fri10:026.510:267.94:270.54:370.85:058:25Waning Crescent19Fri
20Sat10:576.611:188.25:200.25:270.75:058:25Waning Crescent20Sat
21Sun11:506.66:13-0.16:190.55:058:26New Moon21Sun
22Mon12:108.512:446.87:06-0.47:110.45:058:26New Moon22Mon
23Tue1:038.71:376.97:58-0.68:040.25:068:26New Moon23Tue
24Wed1:568.82:307.08:49-0.78:560.15:068:26Waxing Crescent24Wed
25Thu2:488.83:227.29:39-0.79:500.05:068:26Waxing Crescent25Thu
26Fri3:418.64:157.310:30-0.710:450.15:078:26Waxing Crescent26Fri
27Sat4:348.35:097.311:22-0.511:430.25:078:26Waxing Crescent27Sat
28Sun5:297.86:037.412:14-0.35:078:26First Quarter28Sun
29Mon6:237.46:577.412:400.31:060.05:088:26First Quarter29Mon
30Tue7:186.97:507.41:370.41:580.35:088:26First Quarter30Tue
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 10:04 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 100% 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 Full Moon (100% 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