Tides Today & Tomorrow in Barnstable Harbor, MA

TIDE TIMES for Sunday, August 9, 2026
The tide is currently falling in Barnstable Harbor, MA.
Next low tide : in 2h 14m at 2:48 am (0.3 ft)
Next high tide : 8:40 am (8.8 ft)
Sunset today : 7:49 pm
Sunrise tomorrow : 5:43 am
Moon phase : Waning Crescent (13% illuminated)
Tide Station Location : Station #8447335
Common Questions About Tides

Barnstable Harbor, MA Tides - Aug 2099

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat12:389.06:420.36:461.25:367:59Full Moon1Sat
2Sun12:4110.21:189.17:220.37:281.15:377:57Full Moon2Sun
3Mon1:2310.11:569.28:000.48:101.15:387:56Waning Gibbous3Mon
4Tue2:039.92:329.38:370.68:511.25:397:55Waning Gibbous4Tue
5Wed2:429.73:099.39:140.89:321.35:407:54Waning Gibbous5Wed
6Thu3:239.43:479.39:521.110:161.45:417:53Waning Gibbous6Thu
7Fri4:059.04:279.210:321.411:021.55:427:51Third Quarter7Fri
8Sat4:518.65:119.211:161.711:521.65:437:50Third Quarter8Sat
9Sun5:418.35:589.212:022.05:447:49Third Quarter9Sun
10Mon6:348.06:499.312:441.712:532.15:457:47Third Quarter10Mon
11Tue7:307.97:439.41:391.61:462.15:467:46Waning Crescent11Tue
12Wed8:288.08:409.82:371.32:422.05:477:45Waning Crescent12Wed
13Thu9:268.39:3610.33:340.93:401.65:487:43Waning Crescent13Thu
14Fri10:208.810:3010.84:290.44:351.15:497:42Waning Crescent14Fri
15Sat11:119.411:2211.25:20-0.25:280.55:507:40New Moon15Sat
16Sun12:0010.06:08-0.76:20-0.15:517:39New Moon16Sun
17Mon12:1411.512:4910.56:56-1.07:12-0.55:527:38New Moon17Mon
18Tue1:0511.61:3711.07:44-1.28:04-0.85:537:36Waxing Crescent18Tue
19Wed1:5811.52:2611.28:32-1.18:57-0.95:547:35Waxing Crescent19Wed
20Thu2:5011.13:1611.39:21-0.89:50-0.75:557:33Waxing Crescent20Thu
21Fri3:4510.64:0811.110:11-0.310:47-0.45:567:32First Quarter21Fri
22Sat4:429.95:0410.811:050.311:480.05:577:30First Quarter22Sat
23Sun5:449.36:0310.412:030.95:587:28First Quarter23Sun
24Mon6:498.87:0610.112:510.41:031.45:597:27First Quarter24Mon
25Tue7:568.58:109.91:560.72:061.76:007:25Waxing Gibbous25Tue
26Wed9:038.59:149.83:020.83:091.86:017:24Waxing Gibbous26Wed
27Thu10:028.610:109.94:030.84:081.66:027:22Waxing Gibbous27Thu
28Fri10:518.810:5810.04:560.74:591.46:037:20Waxing Gibbous28Fri
29Sat11:349.011:4110.05:390.65:441.26:047:19Full Moon29Sat
30Sun12:119.26:180.56:251.06:057:17Full Moon30Sun
31Mon12:2010.012:479.46:530.57:050.96:067:16Full Moon31Mon
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 5:44 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 Barnstable Harbor, MA?

Barnstable Harbor, MA is currently in a spring phase. Tonight's moon is 13% 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 (13% 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