Tides Today & Tomorrow in Stonington, CT

TIDE TIMES for Tuesday, August 18, 2026
The tide is currently falling in Stonington, CT.
Next low tide : in 1h 48m at 6:41 am (0.3 ft)
Next high tide : 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 - Apr 1938

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:322.88:513.22:39-0.32:35-0.45:316:12New Moon1Fri
2Sat9:172.89:363.23:21-0.43:16-0.45:296:13Waxing Crescent2Sat
3Sun10:062.810:263.14:03-0.33:58-0.45:276:14Waxing Crescent3Sun
4Mon10:582.711:193.04:47-0.24:43-0.35:266:15Waxing Crescent4Mon
5Tue11:542.65:34-0.15:31-0.15:246:16Waxing Crescent5Tue
6Wed12:172.912:522.66:310.16:280.15:236:17First Quarter6Wed
7Thu1:182.81:532.58:100.27:420.25:216:18First Quarter7Thu
8Fri2:202.72:552.69:590.29:270.35:196:19First Quarter8Fri
9Sat3:262.64:002.710:590.211:000.25:186:20Waxing Gibbous9Sat
10Sun4:332.65:032.911:450.111:580.15:166:21Waxing Gibbous10Sun
11Mon5:342.76:003.012:210.05:146:22Waxing Gibbous11Mon
12Tue6:262.86:503.212:440.012:510.05:136:23Waxing Gibbous12Tue
13Wed7:142.87:363.31:25-0.11:20-0.15:116:24Full Moon13Wed
14Thu7:582.88:193.22:03-0.11:52-0.15:106:25Full Moon14Thu
15Fri8:412.89:013.12:40-0.12:28-0.15:086:27Full Moon15Fri
16Sat9:232.69:423.03:17-0.13:060.05:066:28Waning Gibbous16Sat
17Sun10:042.510:232.83:530.03:450.05:056:29Waning Gibbous17Sun
18Mon10:462.311:052.54:300.14:240.15:036:30Waning Gibbous18Mon
19Tue11:302.211:482.35:080.25:050.25:026:31Waning Gibbous19Tue
20Wed12:162.15:490.35:500.45:006:32Waning Gibbous20Wed
21Thu12:332.21:022.06:370.46:420.54:596:33Third Quarter21Thu
22Fri1:192.11:492.07:370.57:500.64:576:34Third Quarter22Fri
23Sat2:062.02:382.08:480.59:100.54:566:35Third Quarter23Sat
24Sun3:572.04:322.210:500.411:220.45:547:36Third Quarter24Sun
25Mon4:542.15:282.311:380.35:537:37Waning Crescent25Mon
26Tue5:522.26:212.612:170.312:190.15:527:38Waning Crescent26Tue
27Wed6:452.47:092.91:030.112:59-0.15:507:39Waning Crescent27Wed
28Thu7:342.67:563.11:48-0.11:39-0.25:497:40New Moon28Thu
29Fri8:222.88:423.32:32-0.22:21-0.35:477:42New Moon29Fri
30Sat9:092.99:293.43:19-0.33:06-0.45:467:43New Moon30Sat
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 10:07 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 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