Tides Today & Tomorrow in Newburyport (Merrimack River), MA

TIDE TIMES for Monday, August 17, 2026
The tide is currently rising in Newburyport (Merrimack River), MA.
Next low tide (tomorrow) : 10:36 am (0.5 ft)
Next high tide (tomorrow) : in 5h 37m at 4:12 am (8.1 ft)
Sunset today : 7:42 pm
Sunrise tomorrow : 5:52 am
Moon phase : Waxing Crescent (27% illuminated)
Tide Station Location : Station #8440466
Common Questions About Tides

Newburyport (Merrimack River), MA Tides - Aug 1942

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat3:299.23:588.910:01-0.610:26-0.15:348:05Waning Gibbous1Sat
2Sun4:198.74:488.710:51-0.211:200.25:358:04Third Quarter2Sun
3Mon5:118.35:398.511:420.25:368:02Third Quarter3Mon
4Tue6:047.86:318.312:150.412:350.65:378:01Third Quarter4Tue
5Wed6:597.57:258.21:110.61:290.85:388:00Third Quarter5Wed
6Thu7:557.28:198.12:070.72:221.05:397:59Waning Crescent6Thu
7Fri8:507.19:128.13:020.73:151.15:407:57Waning Crescent7Fri
8Sat9:447.110:028.23:540.64:051.15:417:56Waning Crescent8Sat
9Sun10:337.210:498.34:430.54:531.05:427:55Waning Crescent9Sun
10Mon11:187.311:328.55:290.45:380.95:437:53New Moon10Mon
11Tue12:007.56:120.36:220.85:447:52New Moon11Tue
12Wed12:138.612:407.86:540.27:040.75:457:51New Moon12Wed
13Thu12:548.71:208.07:330.17:450.65:467:49New Moon13Thu
14Fri1:358.82:018.38:120.18:260.45:487:48Waxing Crescent14Fri
15Sat2:178.82:438.58:520.09:090.35:497:46Waxing Crescent15Sat
16Sun3:028.83:278.79:330.19:560.35:507:45Waxing Crescent16Sun
17Mon3:498.64:158.910:170.210:460.25:517:43Waxing Crescent17Mon
18Tue4:408.45:069.011:050.311:420.25:527:42First Quarter18Tue
19Wed5:348.26:009.112:000.45:537:40First Quarter19Wed
20Thu6:328.06:589.112:420.112:590.55:547:39First Quarter20Thu
21Fri7:337.97:599.21:440.02:000.55:557:37Waxing Gibbous21Fri
22Sat8:357.99:009.42:45-0.23:000.35:567:36Waxing Gibbous22Sat
23Sun9:368.110:009.53:44-0.43:590.15:577:34Waxing Gibbous23Sun
24Mon10:358.310:579.74:40-0.64:56-0.25:587:32Full Moon24Mon
25Tue11:298.611:509.75:34-0.85:50-0.46:007:31Full Moon25Tue
26Wed12:208.96:25-0.96:42-0.56:017:29Full Moon26Wed
27Thu12:409.71:089.07:13-0.97:32-0.66:027:27Full Moon27Thu
28Fri1:299.51:549.18:00-0.88:21-0.56:037:26Waning Gibbous28Fri
29Sat2:169.22:409.08:46-0.59:09-0.46:047:24Waning Gibbous29Sat
30Sun3:028.83:268.99:31-0.29:58-0.16:057:22Waning Gibbous30Sun
31Mon3:508.44:128.710:180.210:470.26:067:21Third Quarter31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8440466)

Common Questions About Newburyport (Merrimack River), MA Tides

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What time does the tide turn (slack tide) in Newburyport (Merrimack River), MA today?

Slack tide in Newburyport (Merrimack River), MA is approximately 7:24 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 Newburyport (Merrimack River), MA?

Newburyport (Merrimack River), MA is currently in a transitional phase. Tonight's moon is 27% 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 Newburyport (Merrimack River), 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 Newburyport (Merrimack River), MA?

Tide predictions for Newburyport (Merrimack River), 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 Newburyport (Merrimack River), MA?

Tide data for Newburyport (Merrimack River), MA is sourced from NOAA Station #8440466. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8440466.

What is the moon phase in Newburyport (Merrimack River), MA tonight?

Tonight the moon over Newburyport (Merrimack River), MA is Waxing Crescent (27% illuminated). This places Newburyport (Merrimack River), 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