Tides Today & Tomorrow in Barnstable Harbor, MA

TIDE TIMES for Saturday, July 18, 2026
The tide is currently falling in Barnstable Harbor, MA.
Next low tide : in 6h 00m at 9:27 am (-0.5 ft)
Next high tide : 3:26 pm (10.3 ft)
Sunset today : 8:12 pm
Sunrise tomorrow : 5:22 am
Moon phase : Waxing Crescent (23% illuminated)
Tide Station Location : Station #8447335
Common Questions About Tides

Barnstable Harbor, MA Tides - Jun 2072

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:0111.212:3910.06:42-0.76:530.45:088:10Full Moon1Wed
2Thu12:4711.01:269.87:28-0.67:390.65:088:10Full Moon2Thu
3Fri1:3110.82:119.68:13-0.38:230.95:078:11Waning Gibbous3Fri
4Sat2:1510.52:559.48:570.09:081.25:078:12Waning Gibbous4Sat
5Sun3:0010.23:399.29:410.39:551.55:078:12Waning Gibbous5Sun
6Mon3:459.84:259.110:260.710:431.75:068:13Waning Gibbous6Mon
7Tue4:339.55:139.011:131.011:341.85:068:14Third Quarter7Tue
8Wed5:249.26:029.012:021.25:068:14Third Quarter8Wed
9Thu6:168.96:519.112:271.912:501.45:068:15Third Quarter9Thu
10Fri7:098.87:409.21:191.81:391.45:068:15Third Quarter10Fri
11Sat8:028.88:289.52:121.62:281.45:068:16Waning Crescent11Sat
12Sun8:558.99:159.93:041.33:181.35:068:16Waning Crescent12Sun
13Mon9:469.010:0110.33:550.84:061.15:068:17Waning Crescent13Mon
14Tue10:339.310:4510.74:430.44:530.85:068:17Waning Crescent14Tue
15Wed11:209.611:3011.15:29-0.15:390.55:068:17New Moon15Wed
16Thu12:079.86:16-0.66:260.35:068:18New Moon16Thu
17Fri12:1611.412:5510.07:03-0.97:140.15:068:18New Moon17Fri
18Sat1:0411.51:4510.27:51-1.18:040.05:068:18Waxing Crescent18Sat
19Sun1:5511.62:3510.48:40-1.28:56-0.15:068:19Waxing Crescent19Sun
20Mon2:4711.43:2810.49:31-1.19:500.05:068:19Waxing Crescent20Mon
21Tue3:4211.24:2310.510:24-0.910:480.15:078:19First Quarter21Tue
22Wed4:4010.85:2010.511:20-0.611:480.25:078:19First Quarter22Wed
23Thu5:4110.46:1910.512:17-0.25:078:19First Quarter23Thu
24Fri6:4410.07:1810.512:500.31:150.15:078:19First Quarter24Fri
25Sat7:489.78:1710.61:520.32:130.35:088:20Waxing Gibbous25Sat
26Sun8:519.69:1410.72:540.23:110.55:088:20Waxing Gibbous26Sun
27Mon9:529.510:0810.73:540.14:070.65:098:20Waxing Gibbous27Mon
28Tue10:469.510:5710.84:49-0.14:590.75:098:20Full Moon28Tue
29Wed11:369.511:4310.75:39-0.25:470.85:108:19Full Moon29Wed
30Thu12:229.56:25-0.26:320.85:108:19Full Moon30Thu
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 12:26 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 transitional phase. Tonight's moon is 23% 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 shifting between spring and neap.

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 Crescent (23% illuminated). This places Barnstable Harbor, MA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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