Tides Today & Tomorrow in Barnstable Harbor, MA

TIDE TIMES for Saturday, July 18, 2026
The tide is currently rising in Barnstable Harbor, MA.
Next low tide : 9:27 am (-0.5 ft)
Next high tide : in 39m at 2:51 am (11.0 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 - May 2072

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:1510.711:3411.45:20-1.05:40-0.65:367:40Full Moon1Sun
2Mon12:0610.76:11-1.26:28-0.55:347:41Full Moon2Mon
3Tue12:2211.512:5610.67:00-1.27:16-0.35:337:42Full Moon3Tue
4Wed1:0911.31:4510.37:48-1.18:020.15:327:43Waning Gibbous4Wed
5Thu1:5511.12:3310.08:35-0.78:490.55:317:44Waning Gibbous5Thu
6Fri2:4110.73:209.69:22-0.39:361.05:297:45Waning Gibbous6Fri
7Sat3:2810.24:099.210:100.210:251.45:287:46Waning Gibbous7Sat
8Sun4:179.85:008.911:000.711:171.75:277:47Third Quarter8Sun
9Mon5:109.35:538.711:521.15:267:48Third Quarter9Mon
10Tue6:059.06:468.712:121.912:441.35:257:49Third Quarter10Tue
11Wed7:008.97:398.81:072.01:361.55:247:50Third Quarter11Wed
12Thu7:568.88:299.02:021.92:271.55:237:51Waning Crescent12Thu
13Fri8:508.99:179.42:551.63:161.45:227:52Waning Crescent13Fri
14Sat9:409.110:019.73:461.24:031.25:217:53Waning Crescent14Sat
15Sun10:269.310:4110.14:330.84:461.05:207:54Waning Crescent15Sun
16Mon11:099.511:2110.45:170.45:280.75:197:55New Moon16Mon
17Tue11:519.75:590.06:100.65:187:56New Moon17Tue
18Wed12:0010.712:349.86:42-0.46:530.45:177:57New Moon18Wed
19Thu12:4211.01:189.97:26-0.67:370.35:167:58New Moon19Thu
20Fri1:2611.12:049.98:12-0.78:240.35:157:59Waxing Crescent20Fri
21Sat2:1311.12:529.98:59-0.89:130.45:158:00Waxing Crescent21Sat
22Sun3:0211.03:449.99:49-0.710:060.55:148:01Waxing Crescent22Sun
23Mon3:5510.84:399.910:42-0.511:030.65:138:02First Quarter23Mon
24Tue4:5310.65:3710.011:39-0.35:128:03First Quarter24Tue
25Wed5:5510.36:3710.112:040.612:37-0.15:128:04First Quarter25Wed
26Thu6:5910.17:3710.31:060.51:360.05:118:05Waxing Gibbous26Thu
27Fri8:0310.08:3710.62:090.42:350.15:118:06Waxing Gibbous27Fri
28Sat9:0710.09:3310.93:110.13:330.15:108:06Waxing Gibbous28Sat
29Sun10:0610.110:2611.14:10-0.34:270.15:098:07Waxing Gibbous29Sun
30Mon11:0010.111:1511.25:04-0.55:180.15:098:08Full Moon30Mon
31Tue11:5110.15:55-0.76:070.25:088:09Full Moon31Tue
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 6:09 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 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