Tides Today & Tomorrow in Stonington, CT

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently rising in Stonington, CT.
Next low tide : 7:34 pm (0.6 ft)
Next high tide : in 4h 33m at 1:34 pm (2.8 ft)
Sunset today : 7:42 pm
Sunrise tomorrow : 6:00 am
Moon phase : First Quarter (36% illuminated)
Tide Station Location : Station #8458694
Common Questions About Tides

Stonington, CT Tides - Dec 1937

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed7:102.97:272.412:290.11:290.16:544:19New Moon1Wed
2Thu7:482.88:062.41:070.12:060.16:554:19New Moon2Thu
3Fri8:252.88:432.41:470.02:450.16:564:18New Moon3Fri
4Sat9:002.79:202.32:290.03:240.16:574:18New Moon4Sat
5Sun9:352.69:582.33:110.14:010.16:584:18Waxing Crescent5Sun
6Mon10:122.510:372.23:510.14:350.16:584:18Waxing Crescent6Mon
7Tue10:512.411:202.24:300.25:090.26:594:18Waxing Crescent7Tue
8Wed11:342.35:090.35:440.27:004:18Waxing Crescent8Wed
9Thu12:062.212:202.35:530.36:250.27:014:18First Quarter9Thu
10Fri12:542.21:102.26:470.47:150.27:024:18First Quarter10Fri
11Sat1:442.32:032.27:560.48:130.17:034:18First Quarter11Sat
12Sun2:372.53:012.29:180.39:150.07:044:18First Quarter12Sun
13Mon3:352.74:042.310:330.210:15-0.17:044:18Waxing Gibbous13Mon
14Tue4:382.95:082.411:340.011:11-0.37:054:19Waxing Gibbous14Tue
15Wed5:403.16:082.612:28-0.27:064:19Waxing Gibbous15Wed
16Thu6:363.37:032.812:05-0.41:21-0.37:074:19Full Moon16Thu
17Fri7:303.57:563.012:59-0.52:16-0.47:074:19Full Moon17Fri
18Sat8:233.68:493.11:53-0.53:10-0.47:084:20Full Moon18Sat
19Sun9:153.59:423.12:48-0.54:00-0.47:094:20Waning Gibbous19Sun
20Mon10:073.310:363.13:43-0.44:45-0.37:094:21Waning Gibbous20Mon
21Tue11:003.111:313.04:35-0.35:29-0.27:104:21Waning Gibbous21Tue
22Wed11:552.95:280.06:130.07:104:21Waning Gibbous22Wed
23Thu12:272.812:502.66:260.27:030.17:114:22Third Quarter23Thu
24Fri1:242.71:442.47:500.48:030.27:114:23Third Quarter24Fri
25Sat2:192.62:392.29:370.49:050.37:114:23Third Quarter25Sat
26Sun3:162.53:372.010:410.49:570.37:124:24Waning Crescent26Sun
27Mon4:162.54:382.011:270.410:420.37:124:24Waning Crescent27Mon
28Tue5:142.55:342.012:030.37:124:25Waning Crescent28Tue
29Wed6:052.56:222.112:370.27:134:26Waning Crescent29Wed
30Thu6:482.67:042.212:060.11:120.17:134:27Waning Crescent30Thu
31Fri7:272.67:422.212:480.01:500.07:134:27New Moon31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8458694)

Common Questions About Stonington, CT Tides

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What time does the tide turn (slack tide) in Stonington, CT today?

Slack tide in Stonington, CT is approximately 4:34 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 Stonington, CT?

Stonington, CT is currently in a transitional phase. Tonight's moon is 36% 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 Stonington, 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 Stonington, CT?

Tide predictions for Stonington, 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 Stonington, CT?

Tide data for Stonington, CT is sourced from NOAA Station #8458694. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8458694.

What is the moon phase in Stonington, CT tonight?

Tonight the moon over Stonington, CT is First Quarter (36% illuminated). This places Stonington, CT 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