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 4h 42m 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 - Jul 2072

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri12:2710.61:069.57:08-0.17:160.95:118:19Full Moon1Fri
2Sat1:0910.51:479.47:500.07:591.05:118:19Waning Gibbous2Sat
3Sun1:5110.32:289.38:310.28:421.25:128:19Waning Gibbous3Sun
4Mon2:3310.13:099.39:110.49:251.35:128:18Waning Gibbous4Mon
5Tue3:159.83:509.29:520.610:101.55:138:18Waning Gibbous5Tue
6Wed3:599.54:339.210:350.810:571.65:148:18Third Quarter6Wed
7Thu4:469.25:189.211:201.111:471.65:148:18Third Quarter7Thu
8Fri5:359.06:059.312:071.35:158:17Third Quarter8Fri
9Sat6:268.86:529.412:381.612:551.45:168:17Third Quarter9Sat
10Sun7:188.77:419.61:301.51:441.45:168:16Waning Crescent10Sun
11Mon8:128.78:329.92:231.22:351.35:178:16Waning Crescent11Mon
12Tue9:078.99:2310.43:170.83:281.15:188:15Waning Crescent12Tue
13Wed10:009.210:1310.94:100.34:200.85:198:15Waning Crescent13Wed
14Thu10:519.611:0311.35:01-0.35:110.35:208:14New Moon14Thu
15Fri11:4110.011:5311.75:50-0.86:020.05:208:13New Moon15Fri
16Sat12:3210.46:40-1.26:53-0.45:218:13New Moon16Sat
17Sun12:4511.91:2410.77:30-1.47:46-0.65:228:12Waxing Crescent17Sun
18Mon1:3811.92:1610.98:20-1.58:39-0.75:238:11Waxing Crescent18Mon
19Tue2:3211.73:0811.09:11-1.49:33-0.65:248:11Waxing Crescent19Tue
20Wed3:2711.34:0211.010:04-1.110:30-0.45:258:10First Quarter20Wed
21Thu4:2410.84:5810.810:58-0.611:30-0.15:268:09First Quarter21Thu
22Fri5:2510.35:5710.711:55-0.25:278:08First Quarter22Fri
23Sat6:279.86:5610.512:310.112:530.35:278:07First Quarter23Sat
24Sun7:319.47:5510.41:330.31:510.75:288:06Waxing Gibbous24Sun
25Mon8:359.28:5510.32:360.42:501.05:298:05Waxing Gibbous25Mon
26Tue9:369.19:5010.33:370.43:471.15:308:04Waxing Gibbous26Tue
27Wed10:319.210:4010.34:330.34:401.15:318:03Waxing Gibbous27Wed
28Thu11:189.211:2510.45:220.25:281.05:328:02Full Moon28Thu
29Fri12:019.36:060.26:111.05:338:01Full Moon29Fri
30Sat12:0710.312:429.36:460.26:530.95:348:00Full Moon30Sat
31Sun12:4810.31:219.47:250.27:340.95:357:59Full Moon31Sun
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