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 3h 26m 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 - Jan 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue6:507.67:196.812:561.11:330.97:144:20Waxing Gibbous1Tue
2Wed7:417.88:136.81:461.22:260.77:144:21Waxing Gibbous2Wed
3Thu8:308.09:056.82:351.23:160.57:144:22Waxing Gibbous3Thu
4Fri9:188.29:536.93:221.24:040.37:144:22Waxing Gibbous4Fri
5Sat10:038.510:387.04:071.24:500.17:144:23Full Moon5Sat
6Sun10:488.711:227.24:521.05:34-0.27:144:24Full Moon6Sun
7Mon11:329.05:360.86:18-0.47:134:25Full Moon7Mon
8Tue12:067.412:179.26:200.67:02-0.57:134:26Full Moon8Tue
9Wed12:517.71:039.37:050.47:46-0.77:134:28Waning Gibbous9Wed
10Thu1:387.91:529.37:540.38:31-0.77:134:29Waning Gibbous10Thu
11Fri2:278.22:449.18:450.19:19-0.67:124:30Waning Gibbous11Fri
12Sat3:188.53:378.89:410.010:10-0.47:124:31Third Quarter12Sat
13Sun4:118.74:348.410:410.011:04-0.27:124:32Third Quarter13Sun
14Mon5:068.85:338.011:43-0.17:114:33Third Quarter14Mon
15Tue6:038.96:357.612:010.012:45-0.27:114:34Third Quarter15Tue
16Wed7:029.07:387.41:000.21:47-0.37:104:36Waning Crescent16Wed
17Thu8:029.08:407.31:580.32:47-0.47:104:37Waning Crescent17Thu
18Fri9:009.09:397.32:550.43:44-0.57:094:38Waning Crescent18Fri
19Sat9:559.010:337.33:510.44:37-0.57:084:39New Moon19Sat
20Sun10:469.011:217.44:440.45:28-0.57:084:40New Moon20Sun
21Mon11:338.95:330.46:14-0.57:074:42New Moon21Mon
22Tue12:077.412:188.86:210.46:58-0.47:064:43New Moon22Tue
23Wed12:497.51:018.67:060.57:40-0.27:064:44Waxing Crescent23Wed
24Thu1:317.51:438.47:500.58:210.07:054:46Waxing Crescent24Thu
25Fri2:137.62:278.18:350.69:030.27:044:47Waxing Crescent25Fri
26Sat2:557.63:127.89:210.79:450.57:034:48Waxing Crescent26Sat
27Sun3:397.73:597.510:100.810:310.87:024:49First Quarter27Sun
28Mon4:257.74:487.211:020.911:191.07:014:51First Quarter28Mon
29Tue5:137.75:416.911:560.97:004:52First Quarter29Tue
30Wed6:047.76:366.712:101.312:520.96:594:53First Quarter30Wed
31Thu6:577.77:326.51:031.41:480.86:584:55Waxing Gibbous31Thu
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