Tides Today & Tomorrow in Rockport, MA

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Rockport, MA.
Next low tide (tomorrow) : 10:42 am (1.1 ft)
Next high tide (tomorrow) : in 6h 07m at 4:43 am (8.2 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 - Jan 1924

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue5:489.46:188.712:070.07:124:18Waning Crescent1Tue
2Wed6:489.87:238.812:270.01:10-0.47:124:19Waning Crescent2Wed
3Thu7:4710.28:258.91:26-0.12:11-0.87:124:20Waning Crescent3Thu
4Fri8:4510.59:249.12:24-0.23:10-1.27:124:21Waning Crescent4Fri
5Sat9:4010.810:209.33:20-0.44:05-1.57:124:22New Moon5Sat
6Sun10:3411.011:139.44:14-0.54:57-1.77:124:23New Moon6Sun
7Mon11:2510.95:07-0.55:48-1.67:124:24New Moon7Mon
8Tue12:049.412:1510.75:58-0.56:37-1.57:124:25Waxing Crescent8Tue
9Wed12:539.41:0510.46:49-0.37:25-1.27:124:26Waxing Crescent9Wed
10Thu1:429.21:549.97:400.08:13-0.87:124:27Waxing Crescent10Thu
11Fri2:319.02:459.38:310.39:01-0.37:114:28Waxing Crescent11Fri
12Sat3:218.83:378.79:240.69:500.27:114:29First Quarter12Sat
13Sun4:138.64:328.210:190.810:410.67:114:30First Quarter13Sun
14Mon5:068.55:307.811:151.011:330.97:104:31First Quarter14Mon
15Tue6:008.46:297.612:131.17:104:32First Quarter15Tue
16Wed6:548.47:267.512:271.21:101.07:104:34Waxing Gibbous16Wed
17Thu7:448.58:197.41:191.32:030.97:094:35Waxing Gibbous17Thu
18Fri8:328.69:087.52:091.42:520.77:094:36Waxing Gibbous18Fri
19Sat9:168.89:517.62:551.33:360.47:084:37Waxing Gibbous19Sat
20Sun9:568.910:317.83:381.24:170.27:074:38Full Moon20Sun
21Mon10:349.111:088.04:181.04:560.07:074:40Full Moon21Mon
22Tue11:119.311:448.24:580.85:34-0.27:064:41Full Moon22Tue
23Wed11:509.55:380.66:12-0.47:054:42Full Moon23Wed
24Thu12:228.512:309.66:200.46:52-0.67:054:43Waning Gibbous24Thu
25Fri1:028.81:139.77:040.27:35-0.77:044:45Waning Gibbous25Fri
26Sat1:469.02:019.67:520.08:21-0.67:034:46Waning Gibbous26Sat
27Sun2:349.22:539.38:45-0.19:11-0.57:024:47Third Quarter27Sun
28Mon3:269.43:509.09:41-0.110:04-0.37:014:49Third Quarter28Mon
29Tue4:239.54:538.710:42-0.211:03-0.17:004:50Third Quarter29Tue
30Wed5:249.65:598.611:47-0.36:594:51Third Quarter30Wed
31Thu6:279.87:078.512:040.112:52-0.46:584:53Waning Crescent31Thu
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 7:42 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