Tides Today & Tomorrow in Barnstable Harbor, MA

TIDE TIMES for Monday, August 10, 2026
The tide is currently rising in Barnstable Harbor, MA.
Next low tide : 4:01 pm (0.8 ft)
Next high tide : in 21m at 9:45 am (9.1 ft)
Sunset today : 7:48 pm
Sunrise tomorrow : 5:44 am
Moon phase : Waning Crescent (6% illuminated)
Tide Station Location : Station #8447335
Common Questions About Tides

Barnstable Harbor, MA Tides - Oct 1949

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat6:558.67:089.612:510.91:041.95:375:23Waxing Gibbous1Sat
2Sun7:588.78:119.61:551.02:081.75:385:22Waxing Gibbous2Sun
3Mon8:529.09:049.72:530.93:051.55:405:20Waxing Gibbous3Mon
4Tue9:369.39:509.73:400.93:541.25:415:18Waxing Gibbous4Tue
5Wed10:149.510:309.74:200.84:360.95:425:17Full Moon5Wed
6Thu10:499.711:079.74:560.85:150.75:435:15Full Moon6Thu
7Fri11:229.911:449.65:300.95:520.55:445:13Full Moon7Fri
8Sat11:569.96:051.06:290.55:455:12Full Moon8Sat
9Sun12:219.412:309.96:401.17:070.65:465:10Waning Gibbous9Sun
10Mon12:599.11:069.87:161.47:460.75:475:08Waning Gibbous10Mon
11Tue1:388.81:439.77:541.68:270.95:485:07Waning Gibbous11Tue
12Wed2:208.52:249.58:351.99:121.25:495:05Waning Gibbous12Wed
13Thu3:058.23:109.39:192.210:021.35:505:03Third Quarter13Thu
14Fri3:568.04:029.310:112.310:571.45:525:02Third Quarter14Fri
15Sat4:528.05:019.311:082.311:551.35:535:00Third Quarter15Sat
16Sun5:518.26:029.512:092.15:544:59Third Quarter16Sun
17Mon6:498.77:039.812:521.01:091.65:554:57Waning Crescent17Mon
18Tue7:459.38:0310.21:490.62:090.95:564:56Waning Crescent18Tue
19Wed8:3710.18:5910.72:430.13:060.15:574:54Waning Crescent19Wed
20Thu9:2710.99:5211.03:34-0.44:00-0.75:584:53New Moon20Thu
21Fri10:1411.610:4411.14:23-0.74:52-1.36:004:51New Moon21Fri
22Sat11:0212.011:3611.05:11-0.95:43-1.76:014:50New Moon22Sat
23Sun11:5112.16:00-0.86:35-1.76:024:48Waxing Crescent23Sun
24Mon12:2910.812:4212.06:50-0.57:27-1.56:034:47Waxing Crescent24Mon
25Tue1:2310.41:3411.67:400.08:20-1.06:044:45Waxing Crescent25Tue
26Wed2:189.82:2811.08:330.69:17-0.46:064:44Waxing Crescent26Wed
27Thu3:179.33:2710.49:301.110:170.36:074:43First Quarter27Thu
28Fri4:208.94:319.810:321.611:200.76:084:41First Quarter28Fri
29Sat5:258.75:379.411:371.96:094:40First Quarter29Sat
30Sun6:288.76:419.212:231.012:411.96:104:38Waxing Gibbous30Sun
31Mon7:278.87:429.21:221.21:431.86:124:37Waxing Gibbous31Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8447335)

Common Questions About Barnstable Harbor, MA Tides

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

Slack tide in Barnstable Harbor, MA is approximately 12:53 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 spring phase. Tonight's moon is 6% 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 maximum.

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 Waning Crescent (6% illuminated). This places Barnstable Harbor, MA in a spring tide cycle, so tidal ranges are near their weekly maximum 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