Tides Today & Tomorrow in Barnstable Harbor, MA

TIDE TIMES for Thursday, August 20, 2026
The tide is currently falling in Barnstable Harbor, MA.
Next low tide : in 1h 24m at 12:10 pm (2.0 ft)
Next high tide : 6:09 pm (9.3 ft)
Sunset today : 7:34 pm
Sunrise tomorrow : 5:55 am
Moon phase : First Quarter (55% illuminated)
Tide Station Location : Station #8447335
Common Questions About Tides

Barnstable Harbor, MA Tides - Oct 1930

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed6:338.26:429.112:311.412:412.35:375:24Waxing Gibbous1Wed
2Thu7:328.37:419.21:311.51:412.25:385:22Waxing Gibbous2Thu
3Fri8:248.58:349.32:261.42:361.95:395:21Waxing Gibbous3Fri
4Sat9:098.99:209.53:131.23:241.65:405:19Waxing Gibbous4Sat
5Sun9:479.310:009.73:531.04:071.25:415:17Waxing Gibbous5Sun
6Mon10:239.610:389.84:290.84:460.85:425:16Full Moon6Mon
7Tue10:579.911:169.85:040.75:240.55:435:14Full Moon7Tue
8Wed11:3010.111:539.75:400.76:030.35:455:12Full Moon8Wed
9Thu12:0510.26:160.76:410.25:465:11Full Moon9Thu
10Fri12:329.612:4110.36:530.87:220.25:475:09Waning Gibbous10Fri
11Sat1:129.41:2010.37:321.08:040.35:485:07Waning Gibbous11Sat
12Sun1:559.12:0210.28:141.28:510.45:495:06Waning Gibbous12Sun
13Mon2:428.82:5010.19:011.59:440.65:505:04Third Quarter13Mon
14Tue3:368.63:4610.09:551.710:420.75:515:02Third Quarter14Tue
15Wed4:368.54:489.910:561.711:440.75:525:01Third Quarter15Wed
16Thu5:408.65:5410.012:001.65:534:59Third Quarter16Thu
17Fri6:449.07:0110.112:460.51:061.35:554:58Waning Crescent17Fri
18Sat7:469.58:0610.41:470.32:100.75:564:56Waning Crescent18Sat
19Sun8:4310.29:0510.72:45-0.13:100.15:574:55Waning Crescent19Sun
20Mon9:3410.810:0010.83:39-0.44:05-0.65:584:53New Moon20Mon
21Tue10:2211.310:5110.84:28-0.54:57-1.05:594:52New Moon21Tue
22Wed11:0911.511:4210.65:16-0.55:47-1.26:004:50New Moon22Wed
23Thu11:5511.56:03-0.26:36-1.16:024:49Waxing Crescent23Thu
24Fri12:3210.312:4111.26:490.17:24-0.86:034:47Waxing Crescent24Fri
25Sat1:219.81:2810.87:360.68:13-0.36:044:46Waxing Crescent25Sat
26Sun2:119.32:1610.38:241.29:030.36:054:44Waxing Crescent26Sun
27Mon3:028.83:089.89:141.79:570.86:064:43First Quarter27Mon
28Tue3:588.44:049.310:082.110:541.36:074:42First Quarter28Tue
29Wed4:568.25:039.011:072.411:511.56:094:40First Quarter29Wed
30Thu5:548.26:028.912:052.46:104:39First Quarter30Thu
31Fri6:488.36:598.912:461.61:032.26:114:38Waxing Gibbous31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447335)

Common Questions About Barnstable Harbor, MA Tides

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What time does the tide turn (slack tide) in Barnstable Harbor, MA today?

Slack tide in Barnstable Harbor, MA is approximately 3:09 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 Barnstable Harbor, MA?

Barnstable Harbor, 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 Barnstable Harbor, 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 Barnstable Harbor, MA?

Tide predictions for Barnstable Harbor, 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 Barnstable Harbor, MA?

Tide data for Barnstable Harbor, MA is sourced from NOAA Station #8447335. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8447335.

What is the moon phase in Barnstable Harbor, MA tonight?

Tonight the moon over Barnstable Harbor, MA is First Quarter (55% illuminated). This places Barnstable Harbor, 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