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 5h 08m at 2:59 pm (1.0 ft)
Next high tide : 8:57 pm (10.8 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 - May 2100

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:489.66:398.712:340.85:377:39Third Quarter1Sat
2Sun6:539.27:408.712:541.81:351.15:357:40Third Quarter2Sun
3Mon7:579.08:378.91:581.82:331.35:347:41Waning Crescent3Mon
4Tue8:578.99:279.22:591.63:261.45:337:42Waning Crescent4Tue
5Wed9:509.010:109.43:541.34:121.45:327:43Waning Crescent5Wed
6Thu10:359.010:489.74:411.04:521.45:307:44Waning Crescent6Thu
7Fri11:169.111:249.95:230.75:301.45:297:45New Moon7Fri
8Sat11:559.011:5910.06:010.56:071.45:287:46New Moon8Sat
9Sun12:339.06:390.46:441.45:277:48New Moon9Sun
10Mon12:3510.01:128.97:170.47:221.55:267:49New Moon10Mon
11Tue1:1110.01:518.87:560.48:001.65:257:50Waxing Crescent11Tue
12Wed1:509.92:318.78:360.58:411.75:247:51Waxing Crescent12Wed
13Thu2:309.93:138.69:180.69:241.85:237:52Waxing Crescent13Thu
14Fri3:139.83:578.510:020.710:111.95:227:53Waxing Crescent14Fri
15Sat4:009.74:468.610:500.711:031.85:217:54First Quarter15Sat
16Sun4:529.75:388.811:420.75:207:55First Quarter16Sun
17Mon5:499.66:329.212:001.712:360.75:197:56First Quarter17Mon
18Tue6:489.77:269.712:591.31:300.65:187:57First Quarter18Tue
19Wed7:489.88:2010.31:580.82:240.45:177:58Waxing Gibbous19Wed
20Thu8:499.99:1410.92:580.23:190.25:167:59Waxing Gibbous20Thu
21Fri9:4810.110:0711.53:57-0.44:140.05:158:00Waxing Gibbous21Fri
22Sat10:4410.310:5811.84:52-1.05:06-0.15:158:01Full Moon22Sat
23Sun11:3910.311:5012.05:46-1.45:58-0.25:148:01Full Moon23Sun
24Mon12:3310.26:39-1.56:500.05:138:02Full Moon24Mon
25Tue12:4211.91:2810.17:32-1.47:420.25:128:03Waning Gibbous25Tue
26Wed1:3611.62:239.88:24-1.18:350.55:128:04Waning Gibbous26Wed
27Thu2:3011.23:179.69:17-0.69:290.95:118:05Waning Gibbous27Thu
28Fri3:2410.74:129.310:10-0.110:251.35:108:06Waning Gibbous28Fri
29Sat4:2110.15:099.111:050.511:241.65:108:07Third Quarter29Sat
30Sun5:209.66:059.012:010.95:098:07Third Quarter30Sun
31Mon6:199.16:599.012:241.812:551.35:098:08Third Quarter31Mon
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 5:58 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 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