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 3h 55m 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 - Jan 1926

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:418.912:4310.06:511.07:250.07:084:21Waning Gibbous1Fri
2Sat1:208.81:239.87:321.18:050.27:084:21Waning Gibbous2Sat
3Sun2:008.72:049.68:141.28:450.47:084:22Waning Gibbous3Sun
4Mon2:408.72:479.38:571.49:270.67:084:23Waning Gibbous4Mon
5Tue3:238.63:339.09:441.510:120.87:084:24Third Quarter5Tue
6Wed4:088.74:228.710:341.610:591.07:084:25Third Quarter6Wed
7Thu4:558.85:148.511:261.511:481.17:084:26Third Quarter7Thu
8Fri5:449.06:088.412:201.37:084:27Third Quarter8Fri
9Sat6:349.37:058.512:381.11:160.97:084:28Waning Crescent9Sat
10Sun7:269.78:028.71:311.02:120.47:074:29Waning Crescent10Sun
11Mon8:1910.38:589.02:250.73:08-0.27:074:30Waning Crescent11Mon
12Tue9:1210.99:519.43:190.34:01-0.87:074:31New Moon12Tue
13Wed10:0311.410:439.84:11-0.14:52-1.47:074:32New Moon13Wed
14Thu10:5511.711:3610.15:03-0.55:44-1.87:064:33New Moon14Thu
15Fri11:4811.95:56-0.86:35-2.07:064:35New Moon15Fri
16Sat12:2910.312:4211.86:49-0.97:26-1.97:054:36Waxing Crescent16Sat
17Sun1:2210.41:3611.57:42-0.98:17-1.77:054:37Waxing Crescent17Sun
18Mon2:1510.42:3211.08:37-0.79:10-1.27:044:38Waxing Crescent18Mon
19Tue3:1010.33:3010.49:35-0.410:05-0.77:044:39First Quarter19Tue
20Wed4:0710.14:319.810:350.011:02-0.17:034:40First Quarter20Wed
21Thu5:059.95:349.211:380.211:590.47:034:42First Quarter21Thu
22Fri6:049.86:388.812:410.47:024:43First Quarter22Fri
23Sat7:049.77:438.612:580.81:450.57:014:44Waxing Gibbous23Sat
24Sun8:029.68:438.51:561.02:460.47:004:45Waxing Gibbous24Sun
25Mon8:569.79:358.62:521.13:400.37:004:47Waxing Gibbous25Mon
26Tue9:439.810:208.73:421.14:260.16:594:48Waxing Gibbous26Tue
27Wed10:259.911:018.74:271.05:070.06:584:49Full Moon27Wed
28Thu11:059.911:408.85:090.95:460.06:574:50Full Moon28Thu
29Fri11:4410.05:490.86:23-0.16:564:52Full Moon29Fri
30Sat12:178.912:229.96:280.76:590.06:554:53Full Moon30Sat
31Sun12:539.012:599.87:070.77:360.06:544:54Waning Gibbous31Sun
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