Tides Today & Tomorrow in Harwich Port, MA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently falling in Harwich Port, MA.
Next low tide : in 2h 56m at 12:05 pm (0.8 ft)
Next high tide : 6:50 pm (3.6 ft)
Sunset today : 7:33 pm
Sunrise tomorrow : 5:54 am
Moon phase : First Quarter (55% illuminated)
Tide Station Location : Station #8447506
Common Questions About Tides

Harwich Port, MA Tides - Jan 2010

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:534.65:14-0.15:55-0.67:074:20Full Moon1Fri
2Sat12:343.912:464.66:06-0.26:45-0.77:074:21Waning Gibbous2Sat
3Sun1:264.01:394.56:59-0.37:35-0.77:074:22Waning Gibbous3Sun
4Mon2:174.12:334.47:53-0.38:26-0.67:074:23Waning Gibbous4Mon
5Tue3:104.13:294.28:48-0.29:18-0.47:074:24Third Quarter5Tue
6Wed4:044.14:273.99:47-0.110:13-0.27:074:25Third Quarter6Wed
7Thu5:014.05:293.710:480.011:100.17:074:26Third Quarter7Thu
8Fri5:593.96:323.511:500.17:064:27Third Quarter8Fri
9Sat6:583.97:373.312:080.312:540.27:064:28Waning Crescent9Sat
10Sun7:583.88:423.31:060.41:580.27:064:29Waning Crescent10Sun
11Mon8:573.89:413.32:050.52:590.27:064:30Waning Crescent11Mon
12Tue9:503.810:323.33:010.53:510.17:054:31Waning Crescent12Tue
13Wed10:373.911:163.33:510.54:360.17:054:32New Moon13Wed
14Thu11:193.911:573.44:360.45:170.07:054:33New Moon14Thu
15Fri11:593.95:180.45:540.07:044:34New Moon15Fri
16Sat12:353.412:383.95:580.36:310.07:044:36New Moon16Sat
17Sun1:113.51:163.86:380.37:070.07:034:37Waxing Crescent17Sun
18Mon1:473.51:543.87:170.37:430.17:034:38Waxing Crescent18Mon
19Tue2:233.52:333.77:570.38:200.27:024:39Waxing Crescent19Tue
20Wed3:003.53:133.68:380.48:590.27:024:40Waxing Crescent20Wed
21Thu3:393.53:563.49:230.49:400.37:014:41First Quarter21Thu
22Fri4:203.54:443.310:110.410:260.47:004:43First Quarter22Fri
23Sat5:073.55:363.211:030.411:160.56:594:44First Quarter23Sat
24Sun5:573.66:323.111:590.46:594:45First Quarter24Sun
25Mon6:523.77:333.112:100.512:580.36:584:46Waxing Gibbous25Mon
26Tue7:503.88:353.21:080.51:580.16:574:48Waxing Gibbous26Tue
27Wed8:504.09:343.42:080.32:57-0.16:564:49Waxing Gibbous27Wed
28Thu9:484.210:303.73:070.13:53-0.36:554:50Full Moon28Thu
29Fri10:434.411:223.94:03-0.14:45-0.56:544:51Full Moon29Fri
30Sat11:374.64:57-0.35:35-0.76:544:53Full Moon30Sat
31Sun12:144.112:304.65:50-0.56:25-0.86:534:54Full Moon31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447506)

Common Questions About Harwich Port, MA Tides

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

Slack tide in Harwich Port, MA is approximately 3:27 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 Harwich Port, MA?

Harwich Port, MA is currently in a neap phase. Tonight's moon is 55% 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 near their weekly minimum.

What datum are Harwich 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 Harwich Port, MA?

Tide predictions for Harwich 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 Harwich Port, MA?

Tide data for Harwich Port, MA is sourced from NOAA Station #8447506. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8447506.

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

Tonight the moon over Harwich Port, MA is First Quarter (55% illuminated). This places Harwich Port, MA in a neap tide cycle, so tidal ranges are near their weekly minimum 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