Tides Today & Tomorrow in Rockport, MA

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Rockport, MA.
Next low tide (tomorrow) : 1:22 am (1.3 ft)
Next high tide : in 1h 23m at 6:55 pm (8.4 ft)
Sunset today : 7:35 pm
Sunrise tomorrow : 5:55 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8441551
Common Questions About Tides

Rockport, MA Tides - Aug 1919

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri3:209.13:489.19:300.39:570.75:338:04Waxing Crescent1Fri
2Sat4:088.64:348.910:140.710:470.95:348:03First Quarter2Sat
3Sun4:598.15:248.711:021.111:401.15:358:01First Quarter3Sun
4Mon5:537.76:178.511:521.55:368:00First Quarter4Mon
5Tue6:517.47:128.512:361.312:461.75:377:59First Quarter5Tue
6Wed7:507.38:068.51:341.31:411.85:387:58Waxing Gibbous6Wed
7Thu8:467.48:588.62:301.22:351.85:397:56Waxing Gibbous7Thu
8Fri9:377.59:468.83:221.03:251.65:407:55Waxing Gibbous8Fri
9Sat10:227.710:309.14:080.84:111.45:417:54Waxing Gibbous9Sat
10Sun11:038.111:119.34:500.54:551.15:427:53Full Moon10Sun
11Mon11:418.411:519.65:300.25:370.75:437:51Full Moon11Mon
12Tue12:198.86:09-0.16:190.35:447:50Full Moon12Tue
13Wed12:319.812:589.36:48-0.37:030.05:457:48Waning Gibbous13Wed
14Thu1:139.91:399.77:29-0.57:49-0.35:467:47Waning Gibbous14Thu
15Fri1:589.92:2410.08:12-0.58:38-0.45:477:45Waning Gibbous15Fri
16Sat2:479.73:1210.18:59-0.49:31-0.55:487:44Waning Gibbous16Sat
17Sun3:409.44:0510.29:49-0.210:28-0.45:507:43Third Quarter17Sun
18Mon4:389.05:0410.110:450.111:30-0.35:517:41Third Quarter18Mon
19Tue5:428.76:0810.011:450.35:527:40Third Quarter19Tue
20Wed6:508.57:1410.012:35-0.212:500.55:537:38Waning Crescent20Wed
21Thu7:598.58:2110.01:42-0.21:560.55:547:36Waning Crescent21Thu
22Fri9:048.79:2410.12:47-0.33:000.45:557:35Waning Crescent22Fri
23Sat10:038.910:2110.23:46-0.43:590.25:567:33Waning Crescent23Sat
24Sun10:579.211:1410.24:40-0.54:540.05:577:32New Moon24Sun
25Mon11:459.45:29-0.55:43-0.15:587:30New Moon25Mon
26Tue12:0110.112:299.56:13-0.46:29-0.15:597:28New Moon26Tue
27Wed12:459.81:099.46:54-0.27:120.06:007:27Waxing Crescent27Wed
28Thu1:279.51:489.47:330.07:540.26:017:25Waxing Crescent28Thu
29Fri2:079.12:269.28:120.48:360.46:027:24Waxing Crescent29Fri
30Sat2:488.73:059.08:510.79:200.66:047:22Waxing Crescent30Sat
31Sun3:308.33:488.89:331.010:060.96:057:20First Quarter31Sun
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 10:08 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 Rockport, MA?

Rockport, MA is currently in a transitional phase. Tonight's moon is 65% 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 (65% 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