Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Wednesday, July 15, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 42m at 8:13 am (-0.6 ft)
Next high tide : 1:56 pm (6.8 ft)
Sunset today : 8:20 pm
Sunrise tomorrow : 5:19 am
Moon phase : New Moon (2% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Jul 2073

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat10:126.310:367.24:390.84:530.95:098:26Waning Crescent1Sat
2Sun11:016.311:237.55:280.65:400.95:108:26Waning Crescent2Sun
3Mon11:496.46:160.46:260.85:118:25New Moon3Mon
4Tue12:097.712:366.57:040.27:120.75:118:25New Moon4Tue
5Wed12:557.91:246.77:500.07:570.65:128:25New Moon5Wed
6Thu1:418.12:116.98:35-0.18:430.55:128:25New Moon6Thu
7Fri2:288.32:587.19:21-0.39:300.45:138:24Waxing Crescent7Fri
8Sat3:158.43:477.210:08-0.410:200.35:148:24Waxing Crescent8Sat
9Sun4:058.34:387.410:57-0.411:140.35:158:23Waxing Crescent9Sun
10Mon4:588.25:327.511:48-0.45:158:23First Quarter10Mon
11Tue5:537.96:267.712:110.212:41-0.35:168:22First Quarter11Tue
12Wed6:497.67:227.81:080.21:35-0.25:178:22First Quarter12Wed
13Thu7:467.38:197.92:080.12:31-0.15:188:21First Quarter13Thu
14Fri8:457.09:177.93:070.03:270.05:198:21Waxing Gibbous14Fri
15Sat9:456.810:138.04:06-0.14:220.15:198:20Waxing Gibbous15Sat
16Sun10:436.711:078.15:01-0.25:150.15:208:19Waxing Gibbous16Sun
17Mon11:376.611:588.15:55-0.26:060.25:218:18Full Moon17Mon
18Tue12:286.66:46-0.36:570.35:228:18Full Moon18Tue
19Wed12:478.01:166.67:35-0.27:460.35:238:17Full Moon19Wed
20Thu1:337.92:026.68:22-0.28:330.45:248:16Full Moon20Thu
21Fri2:187.82:456.79:07-0.19:190.55:258:15Waning Gibbous21Fri
22Sat3:017.73:296.79:510.010:050.65:268:14Waning Gibbous22Sat
23Sun3:457.54:136.810:360.210:530.75:278:13Waning Gibbous23Sun
24Mon4:317.34:596.811:220.311:420.85:288:12Waning Gibbous24Mon
25Tue5:187.15:476.812:090.55:298:11Third Quarter25Tue
26Wed6:076.96:366.912:330.912:570.75:308:10Third Quarter26Wed
27Thu6:576.67:266.91:251.01:470.85:318:09Third Quarter27Thu
28Fri7:496.48:177.02:191.02:380.95:328:08Third Quarter28Fri
29Sat8:426.39:107.13:130.93:301.05:338:07Waning Crescent29Sat
30Sun9:376.210:027.34:060.84:201.05:348:06Waning Crescent30Sun
31Mon10:296.310:527.54:570.65:090.95:358:05Waning Crescent31Mon
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 11:04 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 2% 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 New Moon (2% 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