Tides Today & Tomorrow in Stonington, CT

TIDE TIMES for Tuesday, July 21, 2026
The tide is currently falling in Stonington, CT.
Next low tide : in 13m at 9:56 pm (0.7 ft)
Next high tide (tomorrow) : 3:17 am (2.2 ft)
Sunset today : 8:15 pm
Sunrise tomorrow : 5:32 am
Moon phase : First Quarter (52% illuminated)
Tide Station Location : Station #8458694
Common Questions About Tides

Stonington, CT Tides - Sep 2073

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:233.28:443.42:29-0.12:31-0.26:147:19New Moon1Fri
2Sat9:123.49:333.53:12-0.23:23-0.36:157:18New Moon2Sat
3Sun10:013.510:233.53:56-0.34:15-0.36:167:16New Moon3Sun
4Mon10:523.611:143.34:39-0.35:07-0.26:177:14Waxing Crescent4Mon
5Tue11:443.55:21-0.35:57-0.16:187:13Waxing Crescent5Tue
6Wed12:083.212:403.46:05-0.16:520.16:197:11Waxing Crescent6Wed
7Thu1:043.01:373.36:520.18:020.36:207:09First Quarter7Thu
8Fri2:032.82:373.17:470.310:050.56:217:08First Quarter8Fri
9Sat3:022.73:383.09:000.411:250.56:227:06First Quarter9Sat
10Sun4:042.64:422.910:510.56:237:04Waxing Gibbous10Sun
11Mon5:102.65:472.912:230.412:060.56:247:03Waxing Gibbous11Mon
12Tue6:132.66:452.91:090.412:530.46:257:01Waxing Gibbous12Tue
13Wed7:072.87:343.01:430.41:280.46:266:59Waxing Gibbous13Wed
14Thu7:542.98:173.02:090.32:010.36:276:57Full Moon14Thu
15Fri8:362.98:563.02:310.32:370.26:286:56Full Moon15Fri
16Sat9:153.09:342.92:590.23:160.26:296:54Full Moon16Sat
17Sun9:522.910:102.83:310.13:560.16:306:52Full Moon17Sun
18Mon10:282.910:452.74:050.14:350.26:316:51Waning Gibbous18Mon
19Tue11:022.811:212.54:400.15:130.26:326:49Waning Gibbous19Tue
20Wed11:372.65:150.25:510.36:336:47Waning Gibbous20Wed
21Thu12:002.412:142.55:500.36:280.46:346:45Waning Gibbous21Thu
22Fri12:422.212:562.46:270.47:100.66:366:44Third Quarter22Fri
23Sat1:292.21:432.47:090.48:040.76:376:42Third Quarter23Sat
24Sun2:192.12:352.48:020.59:210.76:386:40Third Quarter24Sun
25Mon3:122.23:312.59:080.510:500.66:396:39Third Quarter25Mon
26Tue4:102.34:332.610:220.411:490.46:406:37Waning Crescent26Tue
27Wed5:132.55:382.811:310.36:416:35Waning Crescent27Wed
28Thu6:142.86:383.012:340.212:300.16:426:33Waning Crescent28Thu
29Fri7:093.17:323.21:150.01:24-0.16:436:32Waning Crescent29Fri
30Sat8:003.48:233.41:57-0.22:16-0.36:446:30New 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 12:36 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 neap phase. Tonight's moon is 52% 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 minimum.

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 (52% illuminated). This places Stonington, CT in a neap tide cycle, so tidal ranges are near their weekly minimum 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