Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Thursday, July 9, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide (tomorrow) : in 5h 00m at 3:39 am (0.4 ft)
Next high tide (tomorrow) : 9:15 am (6.5 ft)
Sunset today : 8:23 pm
Sunrise tomorrow : 5:14 am
Moon phase : Waning Crescent (30% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Jun 2067

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed3:438.74:177.210:36-0.610:490.35:078:15Waning Gibbous1Wed
2Thu4:378.55:137.311:29-0.511:470.35:078:16Waning Gibbous2Thu
3Fri5:328.26:097.412:23-0.45:078:17Third Quarter3Fri
4Sat6:297.87:057.412:450.31:17-0.35:068:18Third Quarter4Sat
5Sun7:277.48:017.51:450.32:12-0.15:068:18Third Quarter5Sun
6Mon8:257.08:587.62:440.33:060.15:068:19Waning Crescent6Mon
7Tue9:246.79:547.73:430.24:000.25:058:20Waning Crescent7Tue
8Wed10:216.510:467.74:380.24:510.45:058:20Waning Crescent8Wed
9Thu11:136.411:337.75:300.15:410.55:058:21Waning Crescent9Thu
10Fri12:026.36:200.16:290.75:058:21New Moon10Fri
11Sat12:197.712:486.27:080.27:160.85:058:22New Moon11Sat
12Sun1:037.71:326.27:540.28:020.85:048:22New Moon12Sun
13Mon1:467.72:146.38:390.28:460.95:048:23New Moon13Mon
14Tue2:287.62:576.39:220.39:301.05:048:23Waxing Crescent14Tue
15Wed3:117.63:406.410:060.410:151.15:048:24Waxing Crescent15Wed
16Thu3:557.54:256.510:500.511:031.15:048:24Waxing Crescent16Thu
17Fri4:417.35:136.611:360.611:531.25:058:25Waxing Crescent17Fri
18Sat5:297.16:016.712:230.75:058:25First Quarter18Sat
19Sun6:196.96:506.812:441.21:100.85:058:25First Quarter19Sun
20Mon7:096.77:407.01:371.21:590.95:058:25First Quarter20Mon
21Tue8:026.68:327.12:311.12:500.95:058:26First Quarter21Tue
22Wed8:576.59:247.43:260.93:400.95:058:26Waxing Gibbous22Wed
23Thu9:526.410:177.74:190.64:300.85:068:26Waxing Gibbous23Thu
24Fri10:456.511:088.05:110.45:200.75:068:26Waxing Gibbous24Fri
25Sat11:386.611:598.36:030.06:100.65:068:26Full Moon25Sat
26Sun12:306.86:54-0.27:010.45:078:26Full Moon26Sun
27Mon12:508.61:237.07:44-0.57:520.25:078:26Full Moon27Mon
28Tue1:428.82:147.28:34-0.78:440.05:088:26Full Moon28Tue
29Wed2:338.83:067.49:24-0.89:36-0.15:088:26Waning Gibbous29Wed
30Thu3:258.73:587.510:14-0.810:31-0.15:098:26Waning Gibbous30Thu
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 6:27 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 30% 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 (30% 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