Tides Today & Tomorrow in Barnstable Harbor, MA

TIDE TIMES for Sunday, August 23, 2026
The tide is currently rising in Barnstable Harbor, MA.
Next low tide (tomorrow) : 3:47 am (1.5 ft)
Next high tide : in 24m at 8:58 pm (9.2 ft)
Sunset today : 7:29 pm
Sunrise tomorrow : 5:58 am
Moon phase : Waxing Gibbous (81% illuminated)
Tide Station Location : Station #8447335
Common Questions About Tides

Barnstable Harbor, MA Tides - Aug 1925

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat8:559.49:1411.13:060.03:200.55:347:59Waxing Gibbous1Sat
2Sun9:559.710:1211.54:05-0.54:180.25:357:58Waxing Gibbous2Sun
3Mon10:5310.111:0811.95:01-1.05:15-0.25:367:57Full Moon3Mon
4Tue11:4810.45:55-1.36:10-0.65:377:56Full Moon4Tue
5Wed12:0312.012:4310.76:48-1.67:04-0.75:387:55Full Moon5Wed
6Thu12:5912.01:3710.97:40-1.67:59-0.85:397:54Waning Gibbous6Thu
7Fri1:5411.82:2910.98:32-1.48:52-0.65:407:52Waning Gibbous7Fri
8Sat2:4811.43:2210.89:22-1.09:47-0.35:417:51Waning Gibbous8Sat
9Sun3:4310.84:1410.610:14-0.410:430.15:427:50Third Quarter9Sun
10Mon4:3910.25:0810.311:070.211:410.45:437:48Third Quarter10Mon
11Tue5:379.66:0410.012:010.85:447:47Third Quarter11Tue
12Wed6:379.17:009.712:400.812:561.35:467:46Third Quarter12Wed
13Thu7:378.77:569.61:401.01:521.65:477:44Waning Crescent13Thu
14Fri8:378.58:519.62:401.12:471.85:487:43Waning Crescent14Fri
15Sat9:338.69:439.73:371.13:411.75:497:42Waning Crescent15Sat
16Sun10:228.710:309.84:280.94:301.65:507:40Waning Crescent16Sun
17Mon11:058.911:1210.05:120.75:151.45:517:39New Moon17Mon
18Tue11:459.111:5210.15:510.65:561.25:527:37New Moon18Tue
19Wed12:239.36:290.46:361.05:537:36New Moon19Wed
20Thu12:3110.21:019.47:060.37:160.95:547:34New Moon20Thu
21Fri1:0910.21:379.67:430.27:560.85:557:33Waxing Crescent21Fri
22Sat1:4710.12:139.78:210.38:360.75:567:31Waxing Crescent22Sat
23Sun2:2710.02:519.88:590.39:180.65:577:30Waxing Crescent23Sun
24Mon3:079.83:309.99:390.510:030.65:587:28Waxing Crescent24Mon
25Tue3:519.64:1310.010:220.610:520.65:597:27First Quarter25Tue
26Wed4:409.45:0110.111:100.811:450.66:007:25First Quarter26Wed
27Thu5:349.25:5510.212:030.96:017:23First Quarter27Thu
28Fri6:329.16:5210.412:430.51:000.96:027:22First Quarter28Fri
29Sat7:339.17:5310.61:430.31:590.96:037:20Waxing Gibbous29Sat
30Sun8:379.38:5610.92:440.03:010.66:047:19Waxing Gibbous30Sun
31Mon9:399.79:5711.33:45-0.44:020.26:057:17Waxing Gibbous31Mon
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 12:22 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 81% 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 Waxing Gibbous (81% 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