Tides Today & Tomorrow in Harwich Port, MA

TIDE TIMES for Saturday, August 22, 2026
The tide is currently falling in Harwich Port, MA.
Next low tide (tomorrow) : in 5h 01m at 2:48 am (0.6 ft)
Next high tide (tomorrow) : 9:30 am (3.1 ft)
Sunset today : 7:30 pm
Sunrise tomorrow : 5:56 am
Moon phase : Waxing Gibbous (73% illuminated)
Tide Station Location : Station #8447506
Common Questions About Tides

Harwich Port, MA Tides - May 2005

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun6:123.97:043.512:170.15:367:38Third Quarter1Sun
2Mon7:193.98:093.612:380.51:200.25:357:39Third Quarter2Mon
3Tue8:273.89:113.71:440.42:210.25:337:40Waning Crescent3Tue
4Wed9:343.810:093.92:500.33:200.15:327:41Waning Crescent4Wed
5Thu10:343.911:004.13:510.14:140.15:317:42Waning Crescent5Thu
6Fri11:283.911:464.24:46-0.15:030.15:307:43New Moon6Fri
7Sat12:173.95:36-0.25:480.15:287:44New Moon7Sat
8Sun12:294.21:043.86:22-0.26:320.25:277:45New Moon8Sun
9Mon1:114.21:493.87:07-0.27:150.35:267:46New Moon9Mon
10Tue1:524.12:323.67:50-0.17:570.45:257:47Waxing Crescent10Tue
11Wed2:344.03:163.58:330.08:400.65:247:49Waxing Crescent11Wed
12Thu3:173.94:003.49:170.29:240.75:237:50Waxing Crescent12Thu
13Fri4:013.84:463.310:020.310:110.85:227:51Waxing Crescent13Fri
14Sat4:493.75:353.210:510.511:020.95:217:52First Quarter14Sat
15Sun5:403.56:273.211:410.611:560.95:207:53First Quarter15Sun
16Mon6:343.57:183.312:320.65:197:54First Quarter16Mon
17Tue7:293.48:083.312:500.91:220.65:187:55First Quarter17Tue
18Wed8:233.48:563.51:450.82:110.65:177:56Waxing Gibbous18Wed
19Thu9:163.49:423.72:380.72:590.65:167:57Waxing Gibbous19Thu
20Fri10:073.510:263.83:290.53:450.55:157:58Waxing Gibbous20Fri
21Sat10:553.611:084.04:180.34:300.45:147:58Waxing Gibbous21Sat
22Sun11:413.711:504.25:040.05:150.35:147:59Full Moon22Sun
23Mon12:273.75:50-0.15:590.25:138:00Full Moon23Mon
24Tue12:344.41:153.86:37-0.36:460.25:128:01Full Moon24Tue
25Wed1:214.42:053.87:26-0.37:350.25:118:02Waning Gibbous25Wed
26Thu2:114.52:573.88:16-0.48:260.25:118:03Waning Gibbous26Thu
27Fri3:044.43:513.79:08-0.39:200.35:108:04Waning Gibbous27Fri
28Sat3:594.34:483.710:03-0.210:190.35:108:05Waning Gibbous28Sat
29Sun4:584.25:483.711:00-0.111:210.45:098:05Third Quarter29Sun
30Mon6:024.06:493.812:000.05:088:06Third Quarter30Mon
31Tue7:073.97:503.812:260.412:590.15:088:07Third Quarter31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447506)

Common Questions About Harwich Port, MA Tides

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

Slack tide in Harwich Port, MA is approximately 6:09 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 Harwich Port, MA?

Harwich Port, MA is currently in a transitional phase. Tonight's moon is 73% 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 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 Waxing Gibbous (73% illuminated). This places Harwich 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