Tides Today & Tomorrow in Merrimacport, MA

TIDE TIMES for Saturday, June 20, 2026
The tide is currently falling in Merrimacport, MA.
Next low tide : in 6h 44m at 11:59 am (-0.2 ft)
Next high tide : 5:47 pm (7.0 ft)
Sunset today : 8:25 pm
Sunrise tomorrow : 5:05 am
Moon phase : First Quarter (37% illuminated)
Tide Station Location : Station #8440369
Common Questions About Tides

Merrimacport, MA Tides - Aug 2037

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat4:297.24:576.811:200.511:400.95:358:04Waning Gibbous1Sat
2Sun5:167.15:446.812:060.75:378:03Third Quarter2Sun
3Mon6:056.86:336.912:301.012:530.85:388:02Third Quarter3Mon
4Tue6:556.67:237.01:221.01:420.95:398:00Third Quarter4Tue
5Wed7:476.48:147.12:161.02:341.05:407:59Third Quarter5Wed
6Thu8:426.39:087.33:110.93:261.05:417:58Waning Crescent6Thu
7Fri9:376.310:027.54:060.74:180.95:427:57Waning Crescent7Fri
8Sat10:326.410:557.84:580.45:090.75:437:55Waning Crescent8Sat
9Sun11:256.611:468.25:490.15:590.55:447:54Waning Crescent9Sun
10Mon12:176.96:40-0.26:500.25:457:53New Moon10Mon
11Tue12:388.41:087.27:30-0.57:410.05:467:51New Moon11Tue
12Wed1:298.61:597.48:19-0.78:32-0.35:477:50New Moon12Wed
13Thu2:208.72:497.79:07-0.89:23-0.45:487:48Waxing Crescent13Thu
14Fri3:118.63:397.99:56-0.810:16-0.45:497:47Waxing Crescent14Fri
15Sat4:028.44:318.010:46-0.611:11-0.45:507:45Waxing Crescent15Sat
16Sun4:568.05:258.011:38-0.45:517:44First Quarter16Sun
17Mon5:517.56:207.912:08-0.212:31-0.25:537:42First Quarter17Mon
18Tue6:467.17:157.81:05-0.11:260.15:547:41First Quarter18Tue
19Wed7:436.78:117.62:030.12:220.35:557:39First Quarter19Wed
20Thu8:426.49:097.53:020.23:180.55:567:38Waxing Gibbous20Thu
21Fri9:416.210:067.43:590.34:130.65:577:36Waxing Gibbous21Fri
22Sat10:376.110:587.34:520.35:050.75:587:34Waxing Gibbous22Sat
23Sun11:276.211:457.35:430.35:550.75:597:33Waxing Gibbous23Sun
24Mon12:126.26:310.36:430.76:007:31Full Moon24Mon
25Tue12:307.312:556.47:160.37:290.66:017:30Full Moon25Tue
26Wed1:137.31:376.58:000.38:130.66:027:28Full Moon26Wed
27Thu1:547.32:176.78:410.38:550.66:037:26Full Moon27Thu
28Fri2:357.32:576.89:220.49:380.66:047:25Waning Gibbous28Fri
29Sat3:167.33:397.010:030.510:220.76:067:23Waning Gibbous29Sat
30Sun3:597.14:227.010:450.711:080.86:077:21Waning Gibbous30Sun
31Mon4:447.05:087.111:290.811:570.86:087:20Waning Gibbous31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8440369)

Common Questions About Merrimacport, MA Tides

Show All
What time does the tide turn (slack tide) in Merrimacport, MA today?

Slack tide in Merrimacport, MA is approximately 2:53 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 37% 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 First Quarter (37% 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