Tides Today & Tomorrow in Dennis Port, MA

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in Dennis Port, MA.
Next low tide : in 2h 16m at 11:12 pm (0.3 ft)
Next high tide (tomorrow) : 5:51 am (3.2 ft)
Sunset today : 7:36 pm
Sunrise tomorrow : 5:52 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8447525
Common Questions About Tides

Dennis Port, MA Tides - Apr 1928

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:373.510:153.32:490.43:320.25:236:05Waxing Gibbous1Sun
2Mon10:303.511:003.43:460.34:190.15:216:06Waxing Gibbous2Mon
3Tue11:163.511:393.54:340.25:010.15:196:07Full Moon3Tue
4Wed11:573.55:170.15:380.15:186:08Full Moon4Wed
5Thu12:153.512:363.55:560.16:140.25:166:09Full Moon5Thu
6Fri12:503.61:133.56:350.06:500.25:146:10Full Moon6Fri
7Sat1:243.61:513.47:130.17:260.35:136:12Waning Gibbous7Sat
8Sun1:593.52:293.37:510.18:030.45:116:13Waning Gibbous8Sun
9Mon2:363.53:093.28:310.28:420.55:096:14Waning Gibbous9Mon
10Tue3:153.43:523.09:140.39:250.75:086:15Waning Gibbous10Tue
11Wed3:583.34:402.910:000.410:120.75:066:16Third Quarter11Wed
12Thu4:473.35:322.910:520.511:050.85:056:17Third Quarter12Thu
13Fri5:403.26:272.911:470.55:036:18Third Quarter13Fri
14Sat6:373.37:242.912:010.812:430.45:016:19Third Quarter14Sat
15Sun7:363.38:193.112:590.71:390.35:006:20Waning Crescent15Sun
16Mon8:343.59:123.31:570.52:330.24:586:21Waning Crescent16Mon
17Tue9:303.710:013.62:540.23:240.04:576:22Waning Crescent17Tue
18Wed10:233.810:483.93:470.04:13-0.24:556:23New Moon18Wed
19Thu11:133.911:344.14:38-0.35:00-0.34:546:25New Moon19Thu
20Fri12:044.05:28-0.55:47-0.44:526:26New Moon20Fri
21Sat12:224.312:554.06:19-0.76:36-0.34:516:27New Moon21Sat
22Sun1:114.31:483.97:10-0.77:25-0.24:496:28Waxing Crescent22Sun
23Mon2:014.32:413.88:02-0.68:17-0.14:486:29Waxing Crescent23Mon
24Tue2:544.13:383.68:56-0.49:110.14:466:30Waxing Crescent24Tue
25Wed3:503.94:383.49:54-0.210:110.34:456:31First Quarter25Wed
26Thu4:513.75:433.310:570.011:140.54:436:32First Quarter26Thu
27Fri5:583.56:503.212:010.24:426:33First Quarter27Fri
28Sat7:063.47:553.212:200.61:050.34:406:34First Quarter28Sat
29Sun9:133.49:553.31:270.63:070.35:397:35Waxing Gibbous29Sun
30Mon10:153.410:463.43:300.54:020.35:387:37Waxing Gibbous30Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447525)

Common Questions About Dennis Port, MA Tides

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

Slack tide in Dennis Port, MA is approximately 2:31 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 Dennis Port, MA?

Dennis Port, 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 Dennis Port, 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 Dennis Port, MA?

Tide predictions for Dennis Port, 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 Dennis Port, MA?

Tide data for Dennis Port, MA is sourced from NOAA Station #8447525. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8447525.

What is the moon phase in Dennis Port, MA tonight?

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