Tides Today & Tomorrow in Rockport, MA

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Rockport, MA.
Next low tide : 10:29 pm (0.5 ft)
Next high tide : in 2h 06m at 4:12 pm (9.2 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 - May 1924

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:379.010:589.44:210.34:390.45:367:42Waning Crescent1Thu
2Fri11:228.911:379.35:060.35:190.65:357:43New Moon2Fri
3Sat12:028.75:460.25:560.85:347:44New Moon3Sat
4Sun12:129.312:398.66:230.26:311.05:327:45New Moon4Sun
5Mon12:449.21:138.46:590.37:061.25:317:46New Moon5Mon
6Tue1:179.11:488.37:350.37:421.35:307:47Waxing Crescent6Tue
7Wed1:519.12:258.18:130.48:201.45:287:48Waxing Crescent7Wed
8Thu2:289.03:058.08:540.59:021.65:277:49Waxing Crescent8Thu
9Fri3:108.83:497.99:380.69:481.75:267:51Waxing Crescent9Fri
10Sat3:568.74:397.810:250.710:391.85:257:52First Quarter10Sat
11Sun4:488.65:327.911:160.811:341.75:247:53First Quarter11Sun
12Mon5:448.56:278.112:100.85:237:54First Quarter12Mon
13Tue6:438.57:238.412:321.51:050.75:217:55First Quarter13Tue
14Wed7:428.78:168.91:311.21:590.55:207:56Waxing Gibbous14Wed
15Thu8:399.09:089.52:280.62:520.35:197:57Waxing Gibbous15Thu
16Fri9:359.39:5810.13:230.03:430.05:187:58Waxing Gibbous16Fri
17Sat10:289.610:4710.74:16-0.64:32-0.35:177:59Full Moon17Sat
18Sun11:219.911:3711.25:08-1.25:22-0.55:168:00Full Moon18Sun
19Mon12:1310.05:59-1.66:12-0.75:168:01Full Moon19Mon
20Tue12:2711.41:0510.16:51-1.97:04-0.65:158:02Waning Gibbous20Tue
21Wed1:1911.51:5910.07:44-1.97:57-0.55:148:03Waning Gibbous21Wed
22Thu2:1311.32:559.88:38-1.78:53-0.25:138:04Waning Gibbous22Thu
23Fri3:0910.93:539.69:34-1.39:520.15:128:05Waning Gibbous23Fri
24Sat4:0910.44:549.410:32-0.910:540.45:118:06Third Quarter24Sat
25Sun5:129.95:579.211:32-0.411:590.65:118:07Third Quarter25Sun
26Mon6:179.46:599.212:330.05:108:08Third Quarter26Mon
27Tue7:229.17:599.21:040.71:330.35:098:09Waning Crescent27Tue
28Wed8:238.88:539.32:070.72:290.55:098:10Waning Crescent28Wed
29Thu9:208.79:439.33:040.63:200.75:088:10Waning Crescent29Thu
30Fri10:118.510:279.33:560.54:060.95:078:11Waning Crescent30Fri
31Sat10:578.411:079.34:410.54:481.15:078:12New Moon31Sat
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 7:20 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 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