Tides Today & Tomorrow in Harwich Port, MA

TIDE TIMES for Monday, August 3, 2026
The tide is currently falling in Harwich Port, MA.
Next low tide : in 2h 08m at 9:56 pm (0.2 ft)
Next high tide (tomorrow) : 4:29 am (3.8 ft)
Sunset today : 7:56 pm
Sunrise tomorrow : 5:36 am
Moon phase : Waning Gibbous (75% illuminated)
Tide Station Location : Station #8447506
Common Questions About Tides

Harwich Port, MA Tides - May 2091

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue10:524.211:174.54:14-0.34:38-0.35:367:38Waxing Gibbous1Tue
2Wed11:474.35:09-0.55:30-0.45:347:39Full Moon2Wed
3Thu12:084.712:404.46:02-0.76:21-0.45:337:40Full Moon3Thu
4Fri12:584.71:344.46:54-0.87:12-0.45:327:41Full Moon4Fri
5Sat1:504.72:284.37:46-0.78:03-0.35:317:42Waning Gibbous5Sat
6Sun2:424.63:224.18:38-0.68:55-0.15:297:44Waning Gibbous6Sun
7Mon3:344.54:174.09:31-0.49:480.15:287:45Waning Gibbous7Mon
8Tue4:294.25:143.810:26-0.210:440.35:277:46Third Quarter8Tue
9Wed5:264.06:133.711:230.111:440.55:267:47Third Quarter9Wed
10Thu6:273.87:133.612:210.25:257:48Third Quarter10Thu
11Fri7:283.68:113.512:450.61:190.45:247:49Third Quarter11Fri
12Sat8:283.69:063.61:450.62:150.55:237:50Waning Crescent12Sat
13Sun9:263.59:573.62:440.63:070.55:227:51Waning Crescent13Sun
14Mon10:193.510:413.73:380.53:550.55:217:52Waning Crescent14Mon
15Tue11:063.611:223.84:260.44:380.55:207:53Waning Crescent15Tue
16Wed11:483.611:593.95:080.35:180.45:197:54New Moon16Wed
17Thu12:283.65:480.25:570.45:187:55New Moon17Thu
18Fri12:364.01:073.66:270.16:350.45:177:56New Moon18Fri
19Sat1:134.01:463.67:060.17:140.45:167:57New Moon19Sat
20Sun1:504.02:263.67:450.07:540.45:157:58Waxing Crescent20Sun
21Mon2:294.03:063.68:260.08:350.55:147:59Waxing Crescent21Mon
22Tue3:104.03:483.69:080.19:190.55:148:00Waxing Crescent22Tue
23Wed3:534.04:333.69:520.110:060.55:138:01Waxing Crescent23Wed
24Thu4:403.95:223.610:410.110:590.55:128:01First Quarter24Thu
25Fri5:323.96:143.711:330.111:550.45:118:02First Quarter25Fri
26Sat6:293.97:093.812:270.15:118:03First Quarter26Sat
27Sun7:283.98:054.012:540.31:230.15:108:04First Quarter27Sun
28Mon8:293.99:024.11:540.22:200.05:108:05Waxing Gibbous28Mon
29Tue9:314.09:594.32:550.03:17-0.15:098:06Waxing Gibbous29Tue
30Wed10:314.110:544.53:54-0.24:13-0.15:098:07Waxing Gibbous30Wed
31Thu11:294.111:464.64:50-0.45:07-0.25:088:07Full Moon31Thu
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 1:12 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 75% 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 Waning Gibbous (75% 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