Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Friday, July 24, 2026
The tide is currently rising in Merrimacport, MA.
Next low tide : 3:42 pm (1.2 ft)
Next high tide : in 51m at 9:06 am (5.8 ft)
Sunset today : 8:13 pm
Sunrise tomorrow : 5:27 am
Moon phase : Waxing Gibbous (79% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Jul 1979

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun5:517.16:236.712:161.112:450.65:088:26First Quarter1Sun
2Mon6:416.97:136.81:081.11:340.75:098:26First Quarter2Mon
3Tue7:326.78:037.02:011.12:240.85:108:26First Quarter3Tue
4Wed8:256.68:557.22:561.03:150.85:108:25Waxing Gibbous4Wed
5Thu9:206.59:487.43:490.84:050.85:118:25Waxing Gibbous5Thu
6Fri10:146.610:387.74:410.54:540.75:118:25Waxing Gibbous6Fri
7Sat11:066.711:288.05:320.35:430.55:128:24Waxing Gibbous7Sat
8Sun11:576.86:220.06:320.45:138:24Full Moon8Sun
9Mon12:188.312:497.07:12-0.37:220.25:138:24Full Moon9Mon
10Tue1:098.61:407.28:02-0.68:120.05:148:23Full Moon10Tue
11Wed2:008.82:317.48:51-0.89:03-0.15:158:23Waning Gibbous11Wed
12Thu2:508.83:227.69:40-0.99:55-0.25:168:22Waning Gibbous12Thu
13Fri3:428.74:147.710:31-0.810:50-0.25:168:22Waning Gibbous13Fri
14Sat4:358.45:087.711:24-0.711:47-0.15:178:21Waning Gibbous14Sat
15Sun5:308.16:047.712:17-0.55:188:21Third Quarter15Sun
16Mon6:267.76:597.712:440.01:10-0.35:198:20Third Quarter16Mon
17Tue7:227.27:557.71:420.12:05-0.15:208:19Third Quarter17Tue
18Wed8:206.88:517.62:400.13:000.15:218:18Waning Crescent18Wed
19Thu9:186.59:477.63:380.23:550.35:228:18Waning Crescent19Thu
20Fri10:156.410:407.54:330.24:470.45:228:17Waning Crescent20Fri
21Sat11:076.311:287.55:250.25:370.55:238:16Waning Crescent21Sat
22Sun11:556.26:150.26:250.65:248:15New Moon22Sun
23Mon12:147.512:416.37:020.27:120.65:258:14New Moon23Mon
24Tue12:587.51:246.37:470.27:580.75:268:13New Moon24Tue
25Wed1:407.52:066.58:310.28:410.75:278:13New Moon25Wed
26Thu2:227.52:476.69:130.29:250.85:288:12Waxing Crescent26Thu
27Fri3:047.53:306.79:560.310:090.85:298:11Waxing Crescent27Fri
28Sat3:477.44:146.810:390.410:550.95:308:10Waxing Crescent28Sat
29Sun4:327.35:006.911:230.511:440.95:318:09Waxing Crescent29Sun
30Mon5:197.15:487.012:090.65:328:07First Quarter30Mon
31Tue6:086.96:377.112:341.012:570.75:338:06First Quarter31Tue
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 12:24 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 transitional phase. Tonight's moon is 79% 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 Waxing Gibbous (79% 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