Tides Today & Tomorrow in Stonington, CT

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Stonington, CT.
Next low tide : 11:24 pm (0.8 ft)
Next high tide : in 4h 32m at 4:11 pm (2.3 ft)
Sunset today : 7:38 pm
Sunrise tomorrow : 6:03 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8458694
Common Questions About Tides

Stonington, CT Tides - Sep 1933

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri6:322.77:063.21:190.312:540.26:137:21Waxing Gibbous1Fri
2Sat7:293.07:583.32:020.21:500.06:147:20Full Moon2Sat
3Sun8:203.28:453.32:400.12:420.06:157:18Full Moon3Sun
4Mon9:073.39:303.33:150.03:310.06:167:16Full Moon4Mon
5Tue9:533.410:143.13:470.04:160.06:177:15Full Moon5Tue
6Wed10:373.310:572.94:180.04:560.16:187:13Waning Gibbous6Wed
7Thu11:213.211:412.74:510.05:340.26:197:11Waning Gibbous7Thu
8Fri12:062.95:250.16:120.46:207:10Waning Gibbous8Fri
9Sat12:272.512:522.76:010.36:530.56:217:08Waning Gibbous9Sat
10Sun1:152.31:402.56:410.47:440.76:227:06Third Quarter10Sun
11Mon2:042.12:302.37:280.69:060.86:237:04Third Quarter11Mon
12Tue2:552.03:222.28:280.710:520.86:247:03Third Quarter12Tue
13Wed3:492.04:212.29:440.711:510.76:257:01Third Quarter13Wed
14Thu4:492.05:252.211:010.66:266:59Waning Crescent14Thu
15Fri5:492.16:182.412:330.612:030.56:276:58Waning Crescent15Fri
16Sat6:392.37:002.51:090.512:520.46:286:56Waning Crescent16Sat
17Sun7:222.67:382.71:410.31:360.26:296:54Waning Crescent17Sun
18Mon8:012.88:162.82:110.12:180.16:306:52New Moon18Mon
19Tue8:403.08:552.92:420.03:000.06:316:51New Moon19Tue
20Wed9:203.29:372.93:14-0.13:43-0.16:326:49New Moon20Wed
21Thu10:023.310:212.93:48-0.14:26-0.16:336:47Waxing Crescent21Thu
22Fri10:463.311:092.84:24-0.15:080.06:346:46Waxing Crescent22Fri
23Sat11:353.25:04-0.15:520.16:356:44Waxing Crescent23Sat
24Sun12:012.711:582.54:460.05:420.35:365:42Waxing Crescent24Sun
25Mon12:293.05:340.26:450.55:375:40First Quarter25Mon
26Tue12:592.51:322.96:320.38:590.65:385:39First Quarter26Tue
27Wed2:022.42:362.97:500.510:260.55:395:37First Quarter27Wed
28Thu3:072.53:442.99:460.511:210.45:405:35Waxing Gibbous28Thu
29Fri4:152.64:512.911:120.35:415:34Waxing Gibbous29Fri
30Sat5:182.95:483.012:040.312:070.25:435:32Waxing Gibbous30Sat
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 7:47 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 65% 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 (65% 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