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

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in Newburyport (Merrimack River), MA.
Next low tide (tomorrow) : in 5h 23m at 12:41 am (0.6 ft)
Next high tide (tomorrow) : 6:30 am (7.4 ft)
Sunset today : 8:15 pm
Sunrise tomorrow : 5:24 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8440466
Common Questions About Tides

Newburyport (Merrimack River), MA Tides - May 1983

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun2:578.93:317.79:39-0.19:491.05:377:43Waning Gibbous1Sun
2Mon3:428.64:177.510:260.310:371.35:367:44Waning Gibbous2Mon
3Tue4:308.45:067.311:160.611:291.55:357:45Third Quarter3Tue
4Wed5:218.15:587.112:090.85:337:46Third Quarter4Wed
5Thu6:157.96:527.112:251.61:041.05:327:47Third Quarter5Thu
6Fri7:117.77:477.21:221.61:581.05:317:48Third Quarter6Fri
7Sat8:077.68:417.42:191.52:501.05:307:49Waning Crescent7Sat
8Sun9:027.79:317.73:131.33:380.95:287:51Waning Crescent8Sun
9Mon9:537.810:178.14:031.04:240.85:277:52Waning Crescent9Mon
10Tue10:417.911:008.54:510.65:070.75:267:53Waning Crescent10Tue
11Wed11:278.011:428.95:360.25:490.75:257:54New Moon11Wed
12Thu12:118.26:20-0.16:310.65:247:55New Moon12Thu
13Fri12:249.312:568.37:05-0.47:130.55:237:56New Moon13Fri
14Sat1:089.51:428.37:50-0.67:570.55:217:57Waxing Crescent14Sat
15Sun1:549.72:308.38:37-0.78:440.55:207:58Waxing Crescent15Sun
16Mon2:439.83:218.39:26-0.79:350.55:197:59Waxing Crescent16Mon
17Tue3:369.74:158.210:20-0.610:320.65:188:00Waxing Crescent17Tue
18Wed4:329.55:138.211:17-0.411:330.65:178:01First Quarter18Wed
19Thu5:319.26:138.212:16-0.35:168:02First Quarter19Thu
20Fri6:338.97:148.312:380.61:16-0.25:168:03First Quarter20Fri
21Sat7:378.68:158.51:430.52:15-0.15:158:04Waxing Gibbous21Sat
22Sun8:408.59:138.82:450.23:110.05:148:05Waxing Gibbous22Sun
23Mon9:418.310:079.03:440.04:040.05:138:06Waxing Gibbous23Mon
24Tue10:368.210:579.24:39-0.24:550.25:128:07Waxing Gibbous24Tue
25Wed11:278.111:429.25:31-0.45:430.35:118:08Full Moon25Wed
26Thu12:148.06:19-0.46:280.55:118:09Full Moon26Thu
27Fri12:259.212:577.97:04-0.47:120.75:108:10Full Moon27Fri
28Sat1:069.11:397.77:48-0.27:550.95:098:11Full Moon28Sat
29Sun1:478.92:207.68:30-0.18:371.15:098:12Waning Gibbous29Sun
30Mon2:298.83:037.59:130.19:211.25:088:13Waning Gibbous30Mon
31Tue3:138.63:487.49:580.410:071.45:088:13Waning Gibbous31Tue
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 3:35 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 neap phase. Tonight's moon is 52% 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 minimum.

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 First Quarter (52% illuminated). This places Newburyport (Merrimack River), MA in a neap tide cycle, so tidal ranges are near their weekly minimum 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