Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Sunday, August 9, 2026
The tide is currently rising in Merrimacport, MA.
Next low tide (tomorrow) : 5:14 am (-0.1 ft)
Next high tide : in 5h 52m at 10:20 pm (8.1 ft)
Sunset today : 7:54 pm
Sunrise tomorrow : 5:44 am
Moon phase : Waning Crescent (13% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Jul 1953

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed4:128.34:467.311:02-0.411:200.35:098:26Waning Gibbous1Wed
2Thu5:068.05:407.511:53-0.35:098:26Third Quarter2Thu
3Fri6:017.76:347.712:180.212:45-0.25:108:25Third Quarter3Fri
4Sat6:577.37:307.81:160.21:390.05:108:25Third Quarter4Sat
5Sun7:556.98:267.82:160.22:340.25:118:25Waning Crescent5Sun
6Mon8:546.59:237.93:160.23:300.45:118:25Waning Crescent6Mon
7Tue9:546.310:197.94:140.14:240.55:128:24Waning Crescent7Tue
8Wed10:516.211:127.85:090.15:170.65:138:24Waning Crescent8Wed
9Thu11:446.16:020.16:080.75:148:24New Moon9Thu
10Fri12:027.812:336.16:520.16:580.75:148:23New Moon10Fri
11Sat12:507.71:206.17:400.27:460.85:158:23New Moon11Sat
12Sun1:357.72:046.28:250.28:320.85:168:22New Moon12Sun
13Mon2:187.62:466.39:090.29:170.85:178:22Waxing Crescent13Mon
14Tue3:017.53:286.49:510.310:020.95:178:21Waxing Crescent14Tue
15Wed3:447.44:126.610:350.410:491.05:188:20Waxing Crescent15Wed
16Thu4:287.24:576.711:190.611:381.05:198:20Waxing Crescent16Thu
17Fri5:156.95:446.812:040.75:208:19First Quarter17Fri
18Sat6:046.76:326.912:291.112:500.95:218:18First Quarter18Sat
19Sun6:546.47:216.91:211.11:381.15:228:17First Quarter19Sun
20Mon7:456.28:127.02:151.12:291.25:238:17First Quarter20Mon
21Tue8:396.09:057.13:101.03:211.35:248:16Waxing Gibbous21Tue
22Wed9:355.99:597.34:050.94:131.25:258:15Waxing Gibbous22Wed
23Thu10:296.010:517.64:570.75:031.15:268:14Waxing Gibbous23Thu
24Fri11:226.211:427.95:480.45:530.95:268:13Waxing Gibbous24Fri
25Sat12:136.46:380.16:430.65:278:12Full Moon25Sat
26Sun12:328.21:036.77:26-0.17:330.45:288:11Full Moon26Sun
27Mon1:238.41:537.08:14-0.48:230.15:298:10Full Moon27Mon
28Tue2:138.52:427.49:00-0.59:13-0.15:308:09Waning Gibbous28Tue
29Wed3:028.43:327.79:47-0.610:06-0.25:318:08Waning Gibbous29Wed
30Thu3:538.24:237.910:36-0.511:01-0.25:328:07Waning Gibbous30Thu
31Fri4:457.95:158.011:26-0.311:57-0.15:348:06Third Quarter31Fri
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 1:47 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 13% 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 (13% 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