Tides Today & Tomorrow in Cos Cob Harbor, CT

TIDE TIMES for Sunday, July 26, 2026
The tide is currently falling in Cos Cob Harbor, CT.
Next low tide : in 1h 39m at 4:11 pm (1.4 ft)
Next high tide : 10:16 pm (7.5 ft)
Sunset today : 8:16 pm
Sunrise tomorrow : 5:44 am
Moon phase : Waxing Gibbous (92% illuminated)
Tide Station Location : Station #8469549
Common Questions About Tides

Cos Cob Harbor, CT Tides - Apr 2074

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:017.23:356.79:320.49:421.06:367:19Waxing Crescent1Sun
2Mon3:437.04:206.510:170.610:291.16:347:20Waxing Crescent2Mon
3Tue4:296.85:106.411:060.811:211.36:337:21First Quarter3Tue
4Wed5:226.76:036.312:010.96:317:22First Quarter4Wed
5Thu6:196.77:006.412:181.312:580.96:297:23First Quarter5Thu
6Fri7:206.87:576.71:181.11:560.76:287:24First Quarter6Fri
7Sat8:197.18:517.12:160.82:500.56:267:26Waxing Gibbous7Sat
8Sun9:147.59:417.63:120.33:420.16:257:27Waxing Gibbous8Sun
9Mon10:067.810:298.14:05-0.24:31-0.36:237:28Waxing Gibbous9Mon
10Tue10:558.211:178.64:56-0.75:18-0.66:217:29Full Moon10Tue
11Wed11:448.35:46-1.06:05-0.76:207:30Full Moon11Wed
12Thu12:048.912:338.46:35-1.26:53-0.86:187:31Full Moon12Thu
13Fri12:539.01:248.37:26-1.37:42-0.76:177:32Waning Gibbous13Fri
14Sat1:438.92:178.18:18-1.18:34-0.46:157:33Waning Gibbous14Sat
15Sun2:368.73:127.89:13-0.89:30-0.16:147:34Waning Gibbous15Sun
16Mon3:328.34:107.410:10-0.410:300.36:127:35Third Quarter16Mon
17Tue4:327.95:117.211:110.011:340.66:117:36Third Quarter17Tue
18Wed5:367.56:167.012:150.36:097:37Third Quarter18Wed
19Thu6:427.27:217.012:410.71:180.56:087:38Third Quarter19Thu
20Fri7:487.18:227.21:460.72:180.56:067:39Waning Crescent20Fri
21Sat8:497.29:177.42:470.63:130.56:057:40Waning Crescent21Sat
22Sun9:427.210:047.63:410.44:020.46:037:41Waning Crescent22Sun
23Mon10:297.310:467.74:300.24:450.46:027:43Waning Crescent23Mon
24Tue11:117.411:257.85:140.05:250.46:007:44New Moon24Tue
25Wed11:517.45:54-0.16:030.55:597:45New Moon25Wed
26Thu12:027.812:297.36:31-0.16:390.65:587:46New Moon26Thu
27Fri12:387.81:077.37:080.07:150.75:567:47New Moon27Fri
28Sat1:147.71:467.27:450.17:520.85:557:48Waxing Crescent28Sat
29Sun1:517.62:267.08:230.28:311.05:547:49Waxing Crescent29Sun
30Mon2:297.43:076.99:030.49:121.15:527:50Waxing Crescent30Mon
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8469549)

Common Questions About Cos Cob Harbor, CT Tides

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What time does the tide turn (slack tide) in Cos Cob Harbor, CT today?

Slack tide in Cos Cob Harbor, CT is approximately 7:13 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 Cos Cob Harbor, CT?

Cos Cob Harbor, CT is currently in a spring phase. Tonight's moon is 92% 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 Cos Cob Harbor, CT 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 Cos Cob Harbor, CT?

Tide predictions for Cos Cob Harbor, CT 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 Cos Cob Harbor, CT?

Tide data for Cos Cob Harbor, CT is sourced from NOAA Station #8469549. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8469549.

What is the moon phase in Cos Cob Harbor, CT tonight?

Tonight the moon over Cos Cob Harbor, CT is Waxing Gibbous (92% illuminated). This places Cos Cob Harbor, CT 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