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 3h 38m 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 - Feb 1931

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun9:3110.610:139.03:360.74:22-0.66:544:55Full Moon1Sun
2Mon10:2411.111:049.64:290.15:12-1.26:534:56Full Moon2Mon
3Tue11:1511.511:5310.15:21-0.46:01-1.66:524:58Full Moon3Tue
4Wed12:0711.66:13-0.86:49-1.76:504:59Waning Gibbous4Wed
5Thu12:4310.512:5911.57:05-1.17:37-1.76:495:00Waning Gibbous5Thu
6Fri1:3210.71:5211.17:58-1.18:26-1.36:485:01Waning Gibbous6Fri
7Sat2:2210.82:4510.58:51-0.99:16-0.86:475:03Waning Gibbous7Sat
8Sun3:1310.63:429.89:48-0.610:09-0.26:465:04Third Quarter8Sun
9Mon4:0810.34:439.110:48-0.111:060.56:455:05Third Quarter9Mon
10Tue5:069.95:488.511:510.36:445:07Third Quarter10Tue
11Wed6:089.66:568.112:051.112:560.56:425:08Waning Crescent11Wed
12Thu7:129.48:048.01:071.42:040.76:415:09Waning Crescent12Thu
13Fri8:169.49:058.12:101.63:070.66:405:10Waning Crescent13Fri
14Sat9:139.59:568.33:091.54:010.56:385:12Waning Crescent14Sat
15Sun10:019.610:398.54:011.34:450.36:375:13New Moon15Sun
16Mon10:439.711:178.74:461.15:240.26:365:14New Moon16Mon
17Tue11:229.811:538.95:260.95:590.26:345:15New Moon17Tue
18Wed12:009.86:060.76:340.26:335:17New Moon18Wed
19Thu12:279.012:379.76:440.67:080.26:325:18Waxing Crescent19Thu
20Fri1:019.21:139.57:220.67:420.46:305:19Waxing Crescent20Fri
21Sat1:349.21:519.28:000.68:180.66:295:20Waxing Crescent21Sat
22Sun2:099.22:308.98:400.78:550.96:275:22Waxing Crescent22Sun
23Mon2:469.13:128.59:230.99:361.36:265:23Waxing Crescent23Mon
24Tue3:289.13:598.110:101.110:221.66:245:24First Quarter24Tue
25Wed4:149.04:537.811:041.211:141.86:235:25First Quarter25Wed
26Thu5:089.05:527.712:011.26:215:26First Quarter26Thu
27Fri6:069.26:547.812:111.81:031.06:205:28Waxing Gibbous27Fri
28Sat7:099.57:588.11:121.62:050.66:185:29Waxing Gibbous28Sat
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