Tides Today & Tomorrow in Stonington, CT

TIDE TIMES for Friday, August 21, 2026
The tide is currently falling in Stonington, CT.
Next low tide : in 2h 11m at 9:16 am (0.7 ft)
Next high tide : 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 - Mar 1934

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu8:132.58:342.62:14-0.22:40-0.26:225:37Full Moon1Thu
2Fri8:482.59:092.72:53-0.33:08-0.26:215:38Full Moon2Fri
3Sat9:252.59:472.73:30-0.33:37-0.36:195:39Waning Gibbous3Sat
4Sun10:052.410:292.74:07-0.24:08-0.36:185:41Waning Gibbous4Sun
5Mon10:502.311:152.74:43-0.24:42-0.26:165:42Waning Gibbous5Mon
6Tue11:412.25:24-0.15:22-0.16:145:43Waning Gibbous6Tue
7Wed12:072.612:362.16:120.16:100.06:135:44Third Quarter7Wed
8Thu1:052.61:362.17:160.37:120.16:115:45Third Quarter8Thu
9Fri2:082.52:392.19:000.38:330.26:095:46Third Quarter9Fri
10Sat3:162.53:482.210:470.210:080.16:085:47Waning Crescent10Sat
11Sun4:282.64:582.411:450.111:29-0.16:065:49Waning Crescent11Sun
12Mon5:342.85:592.712:31-0.16:055:50Waning Crescent12Mon
13Tue6:293.06:523.012:30-0.21:10-0.26:035:51Waning Crescent13Tue
14Wed7:193.17:413.21:23-0.31:47-0.36:015:52New Moon14Wed
15Thu8:063.18:283.32:14-0.42:22-0.46:005:53New Moon15Thu
16Fri8:513.09:133.33:01-0.42:57-0.45:585:54New Moon16Fri
17Sat9:362.89:583.13:43-0.33:31-0.35:565:55Waxing Crescent17Sat
18Sun10:212.610:432.94:20-0.24:07-0.25:555:56Waxing Crescent18Sun
19Mon11:072.411:302.64:560.04:43-0.15:535:57Waxing Crescent19Mon
20Tue11:552.25:340.25:230.15:515:59Waxing Crescent20Tue
21Wed12:192.412:462.06:170.46:070.35:496:00First Quarter21Wed
22Thu1:112.11:381.97:160.57:030.45:486:01First Quarter22Thu
23Fri2:052.02:321.89:100.68:160.55:466:02First Quarter23Fri
24Sat3:051.93:321.810:280.69:430.55:446:03First Quarter24Sat
25Sun4:121.94:341.911:150.510:530.45:436:04Waxing Gibbous25Sun
26Mon5:102.05:282.111:510.311:450.25:416:05Waxing Gibbous26Mon
27Tue5:532.16:112.312:240.25:396:06Waxing Gibbous27Tue
28Wed6:302.36:482.512:290.112:540.05:386:07Waxing Gibbous28Wed
29Thu7:052.47:252.71:10-0.11:25-0.15:366:08Full Moon29Thu
30Fri7:412.58:022.91:51-0.21:56-0.25:346:09Full Moon30Fri
31Sat8:202.68:403.02:31-0.22:29-0.25:336:10Full Moon31Sat
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 12:43 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