Tides Today & Tomorrow in Rockport, MA

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Rockport, MA.
Next low tide : 9:54 am (0.6 ft)
Next high tide : in 2h 44m at 3:51 am (8.7 ft)
Sunset today : 7:39 pm
Sunrise tomorrow : 5:52 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8441551
Common Questions About Tides

Rockport, MA Tides - Jun 1925

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon7:008.27:368.412:511.61:171.05:078:13First Quarter1Mon
2Tue7:568.38:268.91:471.32:080.95:068:13Waxing Gibbous2Tue
3Wed8:508.59:139.42:410.82:570.75:068:14Waxing Gibbous3Wed
4Thu9:428.710:009.93:320.33:450.55:058:15Waxing Gibbous4Thu
5Fri10:339.010:4710.44:22-0.34:320.35:058:16Full Moon5Fri
6Sat11:239.311:3510.85:11-0.85:200.05:048:16Full Moon6Sat
7Sun12:139.56:01-1.36:10-0.25:048:17Full Moon7Sun
8Mon12:2411.11:049.66:51-1.57:01-0.35:048:18Waning Gibbous8Mon
9Tue1:1611.31:579.77:43-1.67:55-0.35:048:18Waning Gibbous9Tue
10Wed2:1011.22:539.78:37-1.58:51-0.25:048:19Waning Gibbous10Wed
11Thu3:0610.93:519.69:33-1.39:510.05:038:19Waning Gibbous11Thu
12Fri4:0710.54:519.610:30-1.010:540.25:038:20Third Quarter12Fri
13Sat5:1010.05:549.611:30-0.611:590.35:038:20Third Quarter13Sat
14Sun6:169.66:569.612:30-0.35:038:21Third Quarter14Sun
15Mon7:219.27:569.71:050.31:300.15:038:21Waning Crescent15Mon
16Tue8:248.98:529.72:090.32:270.35:038:22Waning Crescent16Tue
17Wed9:238.89:449.73:080.23:210.65:038:22Waning Crescent17Wed
18Thu10:178.610:319.74:020.14:100.85:038:22Waning Crescent18Thu
19Fri11:058.411:149.54:500.14:541.05:038:23New Moon19Fri
20Sat11:498.311:529.45:330.25:341.25:048:23New Moon20Sat
21Sun12:288.16:120.26:121.45:048:23New Moon21Sun
22Mon12:289.31:048.06:490.36:491.55:048:23New Moon22Mon
23Tue1:039.21:408.07:250.47:271.55:048:24Waxing Crescent23Tue
24Wed1:399.12:168.08:030.48:071.55:058:24Waxing Crescent24Wed
25Thu2:169.02:548.08:420.58:491.65:058:24Waxing Crescent25Thu
26Fri2:578.93:368.09:230.69:351.65:058:24Waxing Crescent26Fri
27Sat3:418.74:218.110:070.710:241.65:068:24First Quarter27Sat
28Sun4:308.55:098.210:530.811:161.55:068:24First Quarter28Sun
29Mon5:228.45:598.511:420.85:068:24First Quarter29Mon
30Tue6:188.36:518.812:121.312:330.95:078:24First Quarter30Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8441551)

Common Questions About Rockport, MA Tides

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What time does the tide turn (slack tide) in Rockport, MA today?

Slack tide in Rockport, MA is approximately 6:52 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 Rockport, MA?

Rockport, MA is currently in a transitional phase. Tonight's moon is 36% 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 Rockport, 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 Rockport, MA?

Tide predictions for Rockport, 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 Rockport, MA?

Tide data for Rockport, MA is sourced from NOAA Station #8441551. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8441551.

What is the moon phase in Rockport, MA tonight?

Tonight the moon over Rockport, MA is First Quarter (36% illuminated). This places Rockport, 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