Tides Today & Tomorrow in Harwich Port, MA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently rising in Harwich Port, MA.
Next low tide : 12:05 pm (0.8 ft)
Next high tide : in 23m at 6:35 am (3.3 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 - Jul 2010

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu3:513.84:253.69:410.39:580.65:098:18Waning Gibbous1Thu
2Fri4:343.75:063.610:230.410:450.65:108:18Third Quarter2Fri
3Sat5:203.55:503.611:060.511:340.75:108:18Third Quarter3Sat
4Sun6:083.46:353.611:510.65:118:18Third Quarter4Sun
5Mon6:593.37:223.612:250.712:380.65:118:17Third Quarter5Mon
6Tue7:523.28:113.71:170.61:280.75:128:17Waning Crescent6Tue
7Wed8:463.29:023.82:110.52:190.75:138:17Waning Crescent7Wed
8Thu9:423.39:544.03:060.43:120.65:138:16Waning Crescent8Thu
9Fri10:363.410:464.24:000.24:060.55:148:16Waning Crescent9Fri
10Sat11:283.511:374.34:520.04:580.35:158:16New Moon10Sat
11Sun12:193.75:42-0.25:500.25:168:15New Moon11Sun
12Mon12:284.51:093.96:31-0.36:420.05:168:15New Moon12Mon
13Tue1:204.52:004.07:21-0.57:34-0.15:178:14Waxing Crescent13Tue
14Wed2:134.62:514.28:10-0.58:27-0.25:188:14Waxing Crescent14Wed
15Thu3:074.53:424.28:59-0.59:22-0.25:198:13Waxing Crescent15Thu
16Fri4:014.34:344.39:50-0.310:18-0.15:198:12Waxing Crescent16Fri
17Sat4:574.15:294.210:43-0.211:170.05:208:12First Quarter17Sat
18Sun5:573.96:254.211:380.05:218:11First Quarter18Sun
19Mon6:583.77:244.112:180.112:350.25:228:10First Quarter19Mon
20Tue8:023.58:234.01:200.11:330.45:238:09Waxing Gibbous20Tue
21Wed9:073.49:234.02:230.22:330.55:248:09Waxing Gibbous21Wed
22Thu10:103.410:214.03:260.23:320.65:258:08Waxing Gibbous22Thu
23Fri11:073.411:134.04:240.24:260.65:268:07Waxing Gibbous23Fri
24Sat11:563.55:140.25:160.55:278:06Full Moon24Sat
25Sun12:004.012:393.55:580.16:010.55:278:05Full Moon25Sun
26Mon12:434.01:193.66:380.16:430.45:288:04Full Moon26Mon
27Tue1:244.01:583.67:160.17:240.45:298:03Full Moon27Tue
28Wed2:033.92:343.67:530.28:050.45:308:02Waning Gibbous28Wed
29Thu2:423.93:113.78:300.28:450.45:318:01Waning Gibbous29Thu
30Fri3:213.83:473.79:070.39:260.55:328:00Waning Gibbous30Fri
31Sat4:023.74:253.79:450.410:090.55:337:59Waning Gibbous31Sat
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 9:20 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 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